Dear Obo friend, you are browsing a physical enterprise focusing on Expansion joint products! For many years, Obo Waterproof casing Expansion joint cooperative partner--Zhongyuan valve fittings has insisted on taking research and development as the basis of survival, and has continuously improved the application of new technologies in [Expansion joint] products! We've been here,and we'll be here,to back up our commitment to quality. If you want to know more about the application of [Expansion joint] product new technology in practice, please call Innovation pipeline [Expansion joint] technical engineer to learn more first-hand information!