Zhejiang Dorrenhaus Hardware Industrial Co., Ltd: Nothing lasts like a dorrenhaus-strategic partner with world renowned brandings as their OEM/ODM service provider in highest standard. Dorrenhaus hardware was founded on the values of a venerable period of true workmanship, and meticulous old-world caliber German manufacturing standards. And while we continuously expand, improve, and upgrade our repertoire of products, ours is a legacy and a reputation that has withstood the test of time.