gongyi chaochuang pipeline equipment factory was founded in 1998. after decades of development, it has become a professional manufacturer of drainage pipe equipment in china. the main products include various specifications and models of force transmission joints, removable force transmission joints, rigid waterproof sleeves, flexible waterproof sleeves, double flange telescopes, limit telescopes, corrugated compensators, duckbill valves, rubber joints, anti-pull-off rubber joints and other products. the company strictly designs and produces them in accordance with national standards, and the products have been approved.