Yiwu Changhao Locks Co., Ltd, founded in 1999, is a company specializing in manufacturing and trading combination padlocks, key boxes, TSA locks and luggage strap. After over 20 years of development, now we have built our own R&D department, owned over 30,000 plant site and 40 patents. Weve passed certification of BSCI, ISO, TSA, ROHS and CE. We ensure standardized production and whole process quality control. Although we have our own brand CJSJ and Changhao, due to our outstanding performance, we are often chosen as OEM/ODM supplier for lots of online distributors on Amazon and offline chain-stores.