Zhejiang Shangtong Instrument Co., Ltd. is located in Liushi, Wenzhou, known as the electrical capital of China. The company was founded in 1992, and after more than 30 years of unremitting efforts and relentless pursuit, it has now become one of the largest instrument production enterprises in China. The company's main products currently include temperature controllers, thermocouples, thermal resistors, intelligent multifunctional power meters, intelligent digital ammeters, voltmeters, temperature controllers, etc. The product is widely used in enterprises such as scientific research, metallurgy, petroleum, chemical, textile, plastics, food, energy conservation, etc.......