We are manufacturer of gas diaphragms, thermostats, humidity sensors, solar differential controls, for HVAC and R markets, We develop electronic design, miniaturize any control and improve customer electronic controls gived by customerWe also can assembly, print the mark, and put is cartoon individual boxes. All products are tested 100% . We get you goal purchase price, we can supply short series and large series under competitive prices. Nowadays we produce more than 400 models under 63 brand name for several companies.