Qingdao Hainuo Machinery Production Co., Ltd (QDHN) is a leading manufacturer of premium automotive hose and tubing. Our corporate headquarter and manufacturing are located in Qingdao, China, with customers around the world.

QDHN have been serving the automotive industries since 2003. with its long history of reliable performance, the brand QDHN-LD is synonymous with securely hose. as QDHN has grown over its 17 years history, it has achieved status as an innovative, reputable, impactful manufacturer of with divisions in both OEM and aftermarket around the world.

We have more than 17 years manufacture and export experience of brake lines with 3,300+ different QDHN numbers, 20,000+ OEM numbers, 100,000+ interchange aftermarket numbers. Hope to cooperate with you!