ZhongYiYouXin Science and Technology Co., Ltd is one of the largest suppliers in China, mainly engaged in the export of gas detector, hardness tester, radar and other instrument and meter products, and also we are the agent of some foreign products, such as, AVO, HIOKI, and Germany Trapezium etc. We not only provide the most competitive prices with best quality, but also have the ability to help the customers to solve all of their problems happened during the design stage to the finish products. We look forward to having the opportunity of working with companies around the world for joint growth and mutual success. For more information, we sincerely invite you to visit our website: ***** .