No matter where you are, we are your most reliable partner. Thank Northern customers for entering Innovation pipeline website! At the beginning of the establishment of the company, Northern Northern Transmission joint Expansion joint rest assured enterprises Zhongyuan valve fittings enterprise overseas online promotion station 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 Northern, please call Innovation pipeline [Expansion joint] technical engineer to learn more experience!