Hong Kong Rding Tech Co., Limited, headquartered in Shenzhen City, Guangdong Province, China, is a comprehensive unit specialized in researching,manufacturing and distributing international leading level hi-tech products, such as USB thermometers, USB hygrometers, USB thermocouples, USB thermographs, and others. Our products can be used in a lot of areas around the world. Our company owns advanced production equipment, consummate craft and technology. We can provide OEM and ODM products and services.