JGD-F Flexible Rubber Joints, JGD Single And Double Ball Flexible Rubber Joints, and WTX Flexible Rubber Joints, Check Valves, Rubber Check Valves and Sewage Check Valves. Telescopic Joint Series: SS-Type Telescopic Device and RS-Type Telescopic Device. Compensator series:QB-Type Ball Compensator, HF-02-Type Ripple Compensator, JDZ-Type corrugated Compensator, JZW-Type Ripple Compensator, JXH-Type Ripple Compensator, JDH-Type lateral corrugated Compensator, JWJ-Type Universal Hinge Compensator, JZM-Type full buried Ripple Compensator, and FGFB-Type rectangular corrugated Compensator.