1. Solder resistance test:
　　1. Solderability test:
　　Method: Soak the soldering foot into the tin bath about 2mm deep, the test temperature is about 230±5℃, and the holding time is 3±0.5 seconds.
　　Result: More than 80% of the soaked solder feet will be covered by tin.
　　2. Solder resistance test:
　　Method: The temperature of the soldering tin in the soldering furnace is controlled at 260±5℃, and the over-furnace soldering is maintained at the time of 5±1 seconds on the (substrate)
　　When hand welding, the temperature is controlled at 350±30℃, and the time is 3±0.5 seconds, but no abnormal pressure can be applied to the welding foot.
　　Result: The switch has no deformation and can satisfy the electrical performance. This achievement was scrapped under abnormal pressure.
2. Cold resistance test:
　　Method: Put it in a temperature environment of minus 20±3℃ for 4 days, then put it in a normal environment, and take the test after 30 minutes.
　　Result: The touch resistance and insulation resistance are all within the standard range, and there is no trace showing that the switch performance is damaged.
3. High temperature resistance test:
　　Method: Store the product in an environment of 280±30°C for 2-3 minutes and take it out, and test its feel and resistance after the heat is dissipated.
　　Results: resistance, gram rebound, appearance, etc.; none of them showed any signs of damage. The performance of the switch is still intact.
4. Humidity resistance test:
　　Method: Put it in a 40±2℃ 90-95%RH environment for 4 days, then place it in a normal environment, and take the test after 30 minutes.
　　Result: The touch resistance and insulation resistance are all within the standard range, and there is no trace showing that the switch performance is damaged.
5. Temperature alternating experiment:
　　 In a different temperature environment, the test will be carried out after five cycles and then placed in a normal environment for 30 minutes
     The tact switch after the successful experiment is the finished switch. BZCN Bozhong Electric Co., Ltd. has specialized in the production of tact switches for more than 14 years, and we look forward to cooperating with you!