Haining Longyuan Sealing Strip Co., Ltd. was founded in 1992 and specializes in sealing strips for aluminium windows, doors and curtain walls. The plant is at No. 6 Beizhuang East Road, Haining Economic Development Zone, with about 4,000 m² of floor area. It runs 15 extrusion lines for sealing strips, one rubber injection molding unit and two high-speed plastic compound mixers, with a trained workforce and technical staff able to meet the order requirements of different customers.
Since it was founded, the plant has put quality and service first. Our sealing strips and rubber parts are widely used in national projects such as the Yiwu International Expo Centre, Hangzhou West Lake Cultural Square, the Zhejiang Posts and Telecom Building, the cross-sea bridge, airport facilities and high-rise housing. The Longyuan range is well received by curtain wall and aluminium door-and-window assemblers in the province and beyond, and holds a steady share of the market, with 7,200,000 metres sold a year. Working on the principle of good faith, with technology as the guide and service as the backing, Longyuan has earned the confidence of its customers and a number of awards and honors from the authorities.




