To produce almost all product components

Welcome to Sonbo !  We can do the best !
Switch actions: automatic reset (normally open and normally closed), manual reset, one shot(single operation device)
100% factory inspected for function and contact resistance
Factory calibrated bimetallic disc ensures: safe and reliable operation, tamperproof settings
Life expanding innovations include: solid metal-to -metal terminal construction,

Related News

Ancient ancestors


The Daur people are a minority group in China, with only 132,299 members, according to the census carried out in 2021. The DNA analyses have proven that the Daurs are descendants of the ancient Khitan people, a historical a nomadic people originating in eastern Inner Mongolia.