Thank Iran customers for visiting Innovation pipeline enterprise website! Sustainability is Innovation's strategic priority. Iran Iran Expansion joint Expansion joint partner Zhongyuan valve fittings enterprise overseas customer website For many years, we have insisted on taking research and development as the basis of survival and improved the application of new technologies in [Expansion joint] products! Iran friends can call Innovation pipeline [Expansion joint] technical engineers to learn more about the application of Expansion joint product new technology in practice!