Shenzhen Yehai Sci. & Tech. Deve. Co., Ltd. is one of China\'s main test instrument manufacturers. Specializing in professional test and measurement instruments, we boast a high-tech factory housing advanced production and calibration equipment. Moreover, our comprehensive quality assurance system and experienced R&D team make us one of top factories in this field in Asia.   With strong technical support and extensive marketing services, we are now the main supplier of test instruments for major distributors in over 100 countries. Providing a wide range of products, our main models are used in the electric tool, power generation, food and chemical processing, atmospheric monitoring, education and consumer electronics fields.   Doing our best to further the advance of Chinese test instruments in the international market, we welcome all interested companies around the world to contact us for future cooperation.