Ngezansi kunezitifiketi zokubulala ama-xuzhou we-WELWING Bearing Co, Ltd Slowleng Bearing Co, Ltd udlulile, kufaka phakathiushishino ilayisense, I-ISO9001: 2015, CCS isitifiketi, isitifiketi se-SGS kanye namalungelo obunikazi bomkhiqizo njll.