Yantai Hongze Rubber and Plastic Products Co., Ltd. (formerly Longkou Kangda Rubber and Plastic Products Co., Ltd.), founded in 1999, changed its name to Yantai Hongze Rubber and Plastic Products Co., Ltd. in October 2013, and moved from No. 391 Huangcheng North Street, Longkou City to No. 2 Guangzhou Road, Taiwan Development Zone in November 2013.The company's main rubber O-rings, special-shaped rings, skeleton combination gaskets, water pump rubber brackets, buffer gaskets, all kinds of oil seals and all kinds of plastic products (including iron powder injection products), now supporting customers have covered new energy, automobiles, construction machinery, electrical machinery, textile machinery, public environment and other industries.

The company has domestic advanced vacuum flat vulcanization equipment, rubber injection machines and plastic injection molding machines, and the machining accuracy can fully meet customer needs; the company has set up a professional rubber inspection laboratory, with rotorless vulcanization instrument, electronic tensile testing machine, aging box, O-ring rebound meter, tool microscope, projector and other professional inspection and testing equipment to escort high-quality products.

In 2004, the company passed the TS16949 quality system certification of SGS Company, passed the TS16949 quality system certification of BSI company in 2015, and passed the “National Industrial product production license” for O-ring and oil seal products of the General Administration of Quality Inspection and Supervision in 2006, 2011 and 2015.

All the raw materials used by the company are purchased from Sanaifu, Lanhua, DuPont, GE, Daikin, Bayer, Solvay, Shandong Dawn Group and other well-known domestic and foreign professional enterprises. The raw materials cover FKM, NBR, HNBR, acrylate and AEM, silicone rubber (flame retardant), EPDM, PE, PP, PVC, PA6, PA66, PA12, TPE, TPV, PC, ABS, P0M, PA6T, TPU and plastic-based iron powder.

With the aim of “serving users and creating high-quality products in the industry”, the company wholeheartedly provides satisfactory products, high-quality services and reliable guarantees to users at home and abroad for the sake of customers.