Ningbo Dingshen Metalworks Co., Ltd. na faavaeina i le 1998, o loʻo i Ningbo Saina. I le avea ai o se sui o le Chinese Fastener Association, matou te faʻapitoa i le gaosiga o le malosi maualuga Headed bolt, Thread stud Bolt, Tap end stud, Fala taula, Screw, Nut, Washer ma masini faʻapitoa, lea e faʻaaogaina tele i le Suauʻu & Gas alamanuia, Petrochemical industry, Fale Malosiaga, Faiga Uamea, Masini Faufale ma Mea Fa'aeletise. Tulaga e aofia ai ANSI / ASTM, DIN, ISO, BS, GB, JIS, AS, ma isi. Ina ua mavae le sili atu i le sefulu tausaga le maluelue taumafaiga, o lea ua aofia ai la matou kamupani se eria o le 30,000 sq.m, ma le fauina o le 20,000 sq.m. Ua matou saunia atoatoa i luga o 200 gaosiga meafaigaluega ma 30 suʻega masini. W......