In the field of precision control such as smart home sensors, industrial automation equipment, and medical monitoring instruments, a micro switch with a volume of only a few cubic centimeters directly determines the response accuracy and operational safety of the equipment. Yueqing Tongda Wired Electric Factory, which has been deeply engaged in the switch industry for more than 30 years, relies on its dedicated R\&D and precision manufacturing of Micro Switches. It not only breaks through the pain points of traditional products such as "short service life, vulnerability to interference, and poor scenario adaptability" but also builds a precision control solution covering multiple industries, becoming a core supplier in the domestic Micro Switch field.

Looking back at its development history, the in-depth integration of Yueqing Tongda with Micro Switches stems from its keen capture of market demand. When the factory was established in 1990, it mainly produced general-purpose switches. However, as electronic equipment upgraded towards "miniaturization and high precision", traditional switches gradually failed to meet the strict requirements of medical, industrial and other fields due to large trigger errors and weak environmental resistance. Since 2010, Yueqing Tongda decisively listed Micro Switches as its core main product and set up a 10-person special R\&D team. It made breakthroughs one by one in contact material, structural design and protection technology. After 5 years of iteration, it finally formed a product matrix covering 1A-5A current and 3V-250V voltage, which is suitable for more than 20 scenarios ranging from smart door lock buttons to industrial machinery limit control.

Technological innovation is the "key to breaking the situation" for Yueqing Tongda's Micro Switches. Aiming at the industry problems of traditional micro switches such as "contact oxidation leading to failure and unstable trigger stroke", the R\&D team proposed targeted solutions: the contacts are made of high-purity silver-palladium alloy, which is treated by vacuum sputtering process to reduce the oxidation rate by 60%, increasing the electrical service life of a single switch from the industry's conventional 300,000 times to 500,000 times; in terms of structure, an innovative "dual-spring sheet linkage design" is adopted, and the trigger stroke error is controlled within ±0.05mm through laser calibration. Even in a low-temperature industrial environment of -40℃, it can still maintain an accurate trigger range of 0.1-0.3mm. What's more noteworthy is that its independently developed "dust-proof and splash-proof sealing process" enables some Micro Switches to reach IP67 protection level, successfully solving the waterproof problem in scenarios such as kitchen appliances and outdoor sensors.

Scenario-based customization makes Yueqing Tongda's Micro Switches more attractive in the market. For the smart home field, it has launched a "low-power model" with a standby power consumption as low as 5μA, which meets the long battery life needs of wireless smart devices; for medical equipment, it has developed a "mute model", which controls the trigger noise below 25 decibels through a silicone buffer structure to avoid interfering with the ward environment; the "shock-resistant model" dedicated to the industrial field uses a zinc alloy shell and shock-proof springs, which can withstand high-frequency vibrations of 1000Hz and has been widely used in the limit control of CNC machine tools. Previously, the Micro Switch customized for a medical equipment enterprise for heart rate monitors, relying on its "high-precision trigger + medical-grade environmentally friendly materials", helped the product pass the EU CE certification and successfully enter the European market.

Strict quality control is the guarantee of product reputation. In the production workshop of Yueqing Tongda, Micro Switches need to go through "three tests": in the raw material link, each batch of silver-palladium alloy contacts must pass component spectral testing; in the production link, fully automated assembly equipment controls the component assembly error within 0.01mm; in the finished product testing link, each switch must complete 500,000 press tests, 72-hour high-low temperature cycle tests and insulation resistance tests to ensure a 100% factory qualification rate. Today, its Micro Switches have passed three major international certifications: UL, VDE and CQC, and have become long-term suppliers for well-known enterprises such as Midea, Haier and Germany's Augan.

Facing the industry trend of "intelligence and miniaturization", Yueqing Tongda is accelerating the technological upgrading of Micro Switches. At present, the R\&D team has launched the "Micro Switches with Integrated Sensor Function" project, planning to integrate the pressure sensing module into the switch to realize the integration of "control + data collection"; on the production side, it is promoting the construction of a "digital workshop", realizing the whole-process traceability from raw materials to finished products through the MES system, and improving production efficiency by 25%. In the future, Yueqing Tongda will continue to focus on Micro Switches as its core, deepen its presence in the precision control field, and provide more intelligent and reliable core components for global customers.

In fields such as smart homes, industrial equipment, and automotive electronics, the Rocker Switch has become a key component for circuit control, thanks to its characteristics of "easy operation, stable on-off performance, and flexible installation". Yueqing Tongda Wired Electric Factory, which has been deeply engaged in the switch industry for more than 30 years, focuses on the R\&D and precision manufacturing of Rocker Switches. It solves the scenario adaptation pain points of traditional rocker switches through technological innovation, provides safe and reliable control solutions for various industries, and has become an important force in promoting the localization upgrading of rocker switches.

Since its establishment in 1990, Yueqing Tongda has always taken "demand-driven product iteration" as its core concept. In the early days, it mainly focused on basic rocker switches. With the increasing demand for "high load capacity, anti-misoperation, and long service life" in equipment, the factory quickly listed the Rocker Switch as a core main product and set up a special R\&D team to tackle key challenges. After more than a decade of technical refinement, it has now formed a Rocker Switch product matrix covering 1A-32A current and 12V-380V voltage, which can meet the diverse control needs of equipment ranging from household sockets and kitchen appliances to industrial control cabinets and automotive circuits.

Technological breakthrough is the core competitiveness of Yueqing Tongda's Rocker Switches. Aiming at the pain points of traditional rocker switches, such as "easy contact ablation, weak protection performance, and prone to jamming during pressing", the R\&D team has carried out targeted optimizations: In terms of contact design, silver-tin alloy material is used and treated with high-temperature curing to reduce contact resistance, increasing the electrical service life of the switch to more than 200,000 times, far exceeding the industry's conventional standard of 100,000 times; In terms of protection structure, an innovative "double-layer sealing rubber strip" design is adopted, and some products have reached IP67 protection level, which can work stably in humid and dusty environments; In terms of operation experience, by precisely calibrating the angle of the rocker shaft, the pressing stroke is controlled within 1.2-1.5mm, ensuring clear on-off feedback without jamming.

To meet the characteristics of segmented industries, the factory provides flexible customized services. For the smart home field, it has launched an "indicator-equipped model" that supports warm light and cool light dual-color adjustment, which can feedback the circuit on-off status in real time; For the industrial field, it has developed a "high-load model" with a flame-retardant PA66 shell that can withstand a large current of 32A, suitable for high-power equipment such as motors and frequency converters; For the automotive electronics field, it has created a "high and low temperature resistant model" that can operate normally in an environment of -40℃ to 120℃, meeting the needs of automotive circuit control. Previously, the Rocker Switch customized for an automotive parts enterprise, relying on its "shock resistance + fast on-off" features, helped the enterprise's products pass strict automotive environment tests and secured a long-term cooperation order.

Quality control runs through the entire production process of Rocker Switches. In the raw material link, metal contacts and flame-retardant plastics that meet RoHS standards are carefully selected, and each batch undergoes anti-aging and breakdown resistance tests; In the production link, fully automated assembly lines and laser welding technology are introduced to control the component size error within 0.02mm, avoiding performance deviations caused by manual operations; In the testing link, each switch must pass the "200,000-time pressing life test, insulation resistance test, and high-low temperature cycle test" to ensure a 100% factory qualification rate. With strict quality control, the products have passed authoritative certifications such as UL, VDE, and CQC, and become qualified suppliers for enterprises such as Midea, Supor, and Joyoung.

Facing the industry trend of "intelligence and low power consumption", Yueqing Tongda is accelerating the technological upgrading of Rocker Switches. On the R\&D side, it is exploring the integration of Bluetooth modules into rocker switches to realize the integration of "remote control + status feedback"; On the production side, it is promoting the construction of "digital workshops" and realizing real-time traceability of production data through the MES system, improving production efficiency by 22%. In the future, the factory will continue to take the Rocker Switch as the core, adhere to the concept of "precision manufacturing and safety first", provide more adaptable and reliable control components for global customers, and promote the innovative development of the rocker switch industry.

In fields such as industrial control, household appliances, and security equipment, the Button Switch (pushbutton switch) is a basic control component for realizing "one-click start-stop". Its operational stability and environmental resistance directly affect the operational safety of equipment. Yueqing Tongda Wired Electric Factory, which has been deeply engaged in the switch industry for more than 30 years, focuses on the R\&D and manufacturing of Button Switches. It solves control pain points in different scenarios through technological innovation, provides highly adaptable button switch products for various industries, and has become an important force in promoting the localized application of button switches.

Since its establishment in 1990, Yueqing Tongda has always built its product system based on "demand orientation". In the early days, it mainly focused on general-purpose switches. With the upgrading of industrial automation and the popularization of smart home appliances, the market demand for Button Switches with "durability, anti-misoperation, and multiple specifications" has become increasingly urgent. The factory quickly listed Button Switch as a core main product, set up a special R\&D team, and after years of technological iteration, has formed a product matrix covering 1A-20A current and 12V-380V voltage. This matrix can meet the diverse control needs of equipment ranging from small household appliances to heavy industrial machinery.

Technological innovation is the core competitiveness of Yueqing Tongda's Button Switches. Aiming at the pain points of traditional button switches, such as "short pressing life, vulnerability to environmental interference, and high risk of misoperation", the R\&D team has carried out targeted optimizations: In terms of contact design, silver-nickel alloy material is used and treated with vacuum coating to reduce the contact oxidation rate, increasing the switch's pressing life to more than 150,000 times, far exceeding the industry's conventional standard of 100,000 times; In terms of protection performance, some products have reached IP67 protection level, which can work stably in environments with temperatures ranging from -30℃ to 90℃, as well as humid and dusty conditions.

To meet the characteristics of segmented industries, the factory provides flexible customized services. For the industrial field, it has developed a "high-current model" that supports 16A high-current on-off, meeting the high-power control needs of motor start-up and other scenarios; For security equipment, it has launched a "luminous model" that uses a fluorescent material coating to enable quick operation in dark environments. Previously, the Button Switch customized for an industrial equipment enterprise, relying on its "shock resistance + anti-misoperation" features, helped reduce the failure rate of the enterprise's production line by 25% and secured a long-term cooperation order.

Quality control runs through the entire production process of Button Switches. In the raw material link, copper materials and engineering plastics that meet RoHS standards are carefully selected, and each batch undergoes anti-aging and corrosion resistance tests; In the production link, fully automated stamping and assembly equipment is introduced to control the component size error within 0.01mm, avoiding performance deviations caused by manual operations; In the testing link, each switch must pass the "pressing life test, insulation resistance test, and high-low temperature cycle test" to ensure a 100% factory qualification rate. With strict quality control, the products have passed UL, VDE, and CQC certifications and become qualified suppliers for enterprises such as Midea and Gree.

Facing the industry trend of "intelligence and low power consumption", Yueqing Tongda is accelerating the technological upgrading of Button Switches. On the R\&D side, it is exploring the integration of wireless communication modules into button switches to realize the integration of "remote control + status feedback"; On the production side, it is promoting the construction of "digital workshops" and realizing real-time traceability of production data through the MES system, improving production efficiency by 18%. In the future, the factory will continue to take the Button Switch as the core, adhere to the concept of "precision manufacturing", provide more reliable and intelligent control components for global customers, and promote the innovative development of the button switch industry.

In fields such as consumer electronics, smart homes, and industrial equipment, the Round Switch has become a control component that balances functionality and aesthetics, thanks to its advantages of "simple appearance, easy operation, and strong adaptability". Yueqing Tongda Wired Electric Factory, which has been deeply engaged in the switch industry for more than 30 years, focuses on the R\&D and manufacturing of Round Switches. It solves scenario adaptation problems through technological innovation, provides customized control solutions for various industries, and has become an important supplier in the round switch field.

Since its establishment in 1990, Yueqing Tongda has always laid out its product matrix under the guidance of "market demand orientation". In the early days, it mainly focused on general-purpose switches. With the upgrading of equipment design's pursuit of "integrated appearance and humanized operation", the market demand for round switches has continued to grow, as they can adapt to curved panels and save installation space. The factory quickly set up a special R\&D team for Round Switches and listed it as a core main product. After years of technical refinement, it has formed a product system covering 1A-15A current and 12V-250V voltage, which can meet the control needs of equipment ranging from micro household appliances to heavy industrial machinery.

Technological breakthrough is the core competitiveness of Yueqing Tongda's Round Switches. Aiming at the pain points of traditional round switches, such as "poor pressing feedback, weak protection performance, and single adaptation scenario", the R\&D team has carried out targeted optimizations: In terms of structural design, it has innovated a "dual-contact linkage structure", accurately controlling the pressing stroke within 0.5-0.8mm to ensure clear feedback and no jamming; In terms of protection performance, it adopts silicone sealing rings and thread sealing technology, and some products have reached IP65 protection level, which can be used stably in humid environments such as kitchens and outdoor equipment; In terms of appearance adaptability, it provides multiple specifications with diameters ranging from 6mm to 25mm, and supports two shell materials (metal and engineering plastic) to meet the design needs of different equipment.

To meet the characteristics of segmented industries, the factory offers flexible customized services. For the smart home field, it has launched a "light-equipped model" that supports RGB color adjustment and can be linked with the operating status of equipment; For the industrial field, it has developed a "high-load-bearing model" with a zinc alloy shell that can withstand an external impact of 50N, suitable for high-frequency operation scenarios such as machine tools and control cabinets. Previously, the round switch customized for a smart home enterprise, relying on its "ultra-thin design + silent pressing" features, helped the enterprise's products win international design awards and enter the overseas market.

Quality control runs through the entire production process of Round Switches. In the raw material link, copper contacts and high-temperature-resistant plastics that meet RoHS standards are carefully selected, and each batch undergoes composition and anti-aging tests; In the production link, a fully automated assembly line is introduced to control the coaxiality error of components within 0.02mm, avoiding the impact of installation deviations on use; In the testing link, each switch must pass the "100,000-time pressing life test, high-low temperature cycle test, and insulation performance test" to ensure a 100% factory qualification rate. With strict quality control, the products have passed UL, VDE, and CQC certifications and become long-term suppliers for enterprises such as Midea, Supor, and Chint.

Facing the industry trend of "intelligence and lightweight", Yueqing Tongda is accelerating the technological upgrading of Round Switches. On the R\&D side, it is exploring the integration of touch sensing technology into round switches to realize "touch + pressing" dual-mode control; On the production side, it is promoting the construction of "digital workshops" and realizing real-time traceability of production data through the MES system, improving efficiency by 20%. In the future, the factory will continue to take the Round Switch as the core, adhere to the concept of "precision manufacturing", provide more adaptable and reliable control components for global customers, and promote the innovative development of the round switch industry.

In fields such as smart homes, industrial automation, and medical equipment, Micro Switch (micro switch) has become a key component for achieving precise control, thanks to its "high sensitivity and miniaturization" characteristics. Yueqing Tongda Wired Electric Factory, which has been deeply engaged in the switch industry for more than 30 years, provides reliable precision control solutions for various industries through its dedicated R\&D and precision manufacturing of Micro Switches, and has become an important force in promoting the localization development of micro switches.

Since its establishment in 1990, Yueqing Tongda has always been guided by the principle of "technology adapting to scenario needs", gradually focusing on the segmented field of Micro Switch from general-purpose switches in the early days. As equipment upgrades towards "miniaturization and high precision", the market's requirements for Micro Switch in terms of "trigger accuracy, service life, and stability" have become increasingly strict. The factory quickly set up a special R\&D team and listed Micro Switch as a core main product for key research. After years of technical accumulation, it has formed a Micro Switch product system covering 1A-5A current and 3V-250V voltage, which can meet the diverse control needs from micro sensors to large industrial machinery.

Technological innovation is the core competitiveness of Yueqing Tongda's Micro Switches. Aiming at the pain points of traditional micro switches such as "trigger delay, short service life, and vulnerability to environmental interference", the R\&D team has carried out targeted optimizations: In terms of contact design, silver alloy material is used and treated with a special electroplating process to reduce contact resistance, increasing the electrical service life of the switch to more than 500,000 times; In terms of structure, an innovative "dust-proof and splash-proof sealing design" is adopted, and some products have reached IP60 protection level, which can work stably in humid and dusty industrial workshops; In terms of sensitivity control, the trigger stroke is precisely calibrated to 0.1-0.3mm, meeting the scenarios with extremely high control accuracy requirements such as medical equipment.

To meet the needs of different industries, the factory provides flexible customized services. For the smart home field, it has developed "low-power Micro Switches", reducing standby power consumption by 30% to meet the battery life needs of wireless smart devices; For the industrial automation field, it has launched "high and low temperature resistant models", which can operate normally in environments ranging from -40℃ to 85℃; For the medical equipment field, it uses medical-grade environmentally friendly materials and has passed biocompatibility tests to ensure safe use. Previously, the Micro Switch customized for a medical equipment enterprise, relying on its "high-precision trigger + low noise" characteristics, helped the enterprise's products pass international certifications and gain recognition in overseas markets.

Quality control runs through the entire production process of Micro Switches. In the raw material link, metal contacts, engineering plastics and other components that meet RoHS standards are carefully selected, and each batch undergoes component testing; In the production link, fully automated precision assembly equipment is introduced to control the component assembly error within 0.01mm, avoiding deviations caused by manual operations; In the testing link, each switch must pass three core tests: "trigger accuracy test, service life test, and insulation performance test", ensuring that the qualification rate of delivered products reaches 100%. With strict quality control, the products have passed authoritative certifications such as UL, VDE, and CQC, and have become qualified suppliers for enterprises such as Midea, Haier, and BYD.

Facing the industry trend of "intelligence and miniaturization", Yueqing Tongda is accelerating technological upgrading. On the R\&D side, it is exploring the integration of sensor technology into Micro Switches to realize the integration of "control + data collection"; On the production side, it is promoting the construction of "digital workshops" and realizing full-process data traceability through the MES system, improving production efficiency by 25%. In the future, the factory will continue to take Micro Switch as the core, adhere to the concept of "precision manufacturing", provide more reliable and intelligent precision control components for global customers, and promote the innovative development of the micro switch industry.

In fields such as industrial equipment, household appliances, and medical instruments, Push Switch (button switch) is the core component for realizing "one-click control", and its reliability and adaptability directly affect equipment operation efficiency. Yueqing Tongda Wired Electric Factory, which has been deeply engaged in the switch industry for more than 30 years, provides customized control solutions for various industries through its dedicated R\&D and precision manufacturing of Push Switch, becoming an important force in promoting the localization upgrading of button switches.

Since its establishment in 1990, Yueqing Tongda has always been guided by the principle of "scenario needs driving product innovation", gradually expanding from basic button switches in the early days to multi-functional composite products. With the accelerating trend of equipment miniaturization and intelligence, the market demand for Push Switches with "small size, long service life, and anti-misoperation" has surged. The factory quickly listed it as a core main product and set up a special R\&D team to tackle key problems. After years of technical accumulation, it has formed a Push Switch product system covering 1A-10A current and 3V-250V voltage, which can adapt to the diverse control needs from micro household appliances to heavy industrial equipment.

Technological breakthrough is the core competitiveness of Yueqing Tongda's Push Switch. Aiming at the pain points of traditional button switches such as "pressing jamming, short service life, and easy water ingress", the R\&D team has carried out targeted optimizations: in terms of contact design, silver-copper composite material is adopted, which is processed by vacuum welding technology to reduce contact resistance, increasing the electrical service life of the switch to more than 100,000 times; in terms of structure, an innovative "dust-proof and waterproof sealing ring" is used, and some products have reached IP65 protection level, which can be used stably in humid and dusty environments such as kitchens and workshops.

To adapt to different industry scenarios, the factory provides flexible customized services. For the home appliance industry, it has developed "Push Switch with Light", which uses LED indicator lights to feedback the on-off status of equipment in real time; for the industrial field, it has launched "anti-misoperation model", adding a raised pressing panel to avoid equipment shutdown caused by accidental touch; for medical equipment, it uses medical-grade environmentally friendly plastic shells, which have passed biocompatibility tests to ensure safe use. Previously, the washing machine-specific Push Switch customized for a well-known home appliance enterprise, relying on "mute pressing + waterproof design", helped reduce the product failure rate by 30% after its launch.

Quality control runs through the entire production process of Push Switch. In the raw material link, copper materials and plastics that meet RoHS standards are carefully selected, and each batch undergoes component testing; in the production link, a fully automated assembly line is introduced to control the component assembly error within 0.01mm, avoiding deviations caused by manual operations; in the testing link, each switch must pass "pressing life test", "temperature resistance test", and "insulation performance test". Among them, the life test simulates actual use scenarios, and only after 100,000 consecutive presses without failure can the switch leave the factory. With strict quality control, the products have passed UL, VDE, and CQC certifications and become qualified suppliers for enterprises such as Midea and Gree.

Facing the industry trend of "intelligence and low power consumption", Yueqing Tongda is accelerating technological upgrading. On the R\&D side, it is exploring the integration of NFC (Near Field Communication) technology into Push Switch to realize the integration of "touch control + data transmission"; on the production side, it is promoting the construction of "digital workshop", realizing full-process traceability through MES system and improving production efficiency by 20%. In the future, the factory will continue to take Push Switch as the core, adhere to the concept of "precision manufacturing", provide more reliable and intelligent control components for global customers, and promote the innovative development of the button switch industry.