Shenzhen Tongchang Testing Technology Co., Ltd, the company was founded in 2022-05-05. Our company address is 606A, No. 106, Yongfu Road, Qiaotou Community, Fuhai Street, Bao'an District, Shenzhen Our company offers variety of products which can meet your multifarious demands. We adhere to the management principles of quality first, customer first and credit-based; Since the establishment of the company and always do our best to satisfy potential needsof our customers. Our company is sincerely willing to cooperate with enterprises from all over the world in order to realize a win-win situation, since the trend of economic globalization has developed with anirresistible force. Welcome to communicate and negotiate at any time.