In line with the development of the industry, in order to better meet customers' ever - increasing demands and bring more high - quality and convenient experiences to visitors, meticulous preparations have been made to upgrade the official website, which was launched on April 8, 2025.

     This website upgrade is Tongzhou Testing's in - depth implementation of its digital strategy, demonstrating our determination to embrace changes and keep innovating.

     We sincerely hope that the new website can bring an unprecedented convenient experience to every user and help you gain a deeper understanding of us.