Our service,for your wonderful. Thank Shanghai customers for entering Innovation pipeline website! At the beginning of the establishment of the company, Shanghai Waterproof casing Expansion joint trusted partners--Zhongyuan valve fittings took research and development as the basis of survival and continued to improve the application of new technologies in [Expansion joint] products! If you want to know more about the application of Expansion joint product new technology in Shanghai, please call Innovation pipeline [Expansion joint] technical engineer to learn more experience!