Handan Chang Lan Fastener Manufacturing Co., Ltd. mbụ Yongnian Tiexi Changhe fastener factory bụ nnukwu ọnụ ọgụgụ ọkọlọtọ fastener emeputa na Yongnian District. The ụlọ ọrụ dị na ọkọlọtọ fastener nkesa center nke Hebei Yongnian, ekpuchi ebe 3,050 square mita, bụ nso Tianjin Port na Qingdao ọdụ ụgbọ mmiri, mbupụ bụ nnọọ convinedtly. The ụlọ ọrụ nwere multi ọnọdụ oyi isi igwe, nlereanya 12b, 14b, 16b, 24b, 30b, 33b; nwere igwe na-ekpo ọkụ, ihe nlereanya nwere tọn 200, tọn 280, tọn 500, tọn 800;