From2018 April 30 to May 3, 2018, the 49th International Petroleum Exhibition OTC was held in Houston, Henan Dalin, as the leading enterprise of China Petroleum drilling and production rubber air tube and pneumatic clutch, participated in the exhibition. Our product CB clutch and brake, pneumatic clutch rubber airbag, disc clutch air tube by U.S. partners and new and old customers concern and widespread praise, through the face-to-face communication, they have more intuitive understanding of chose products, more at ease about the quality of the clutch and the airbag, we also will continue to improve on the quality control and after-sales service, to provide customers with more satisfactory products.