Top 10 enterprises of self drilling screws in China.

Handan Shuangzi Metal Products Co., Ltd ko te kaihanga ngaio o te kōhao takahuri me mirimiri hinonga takahuri. Mai i tōna tīmatanga, kua te kamupene kua arotahi i runga i te whakaputa me te R & D o kōhao tīwiri, kua hanga nei e te hou, paerewa teitei, tauine, momo o te raina hanga ngaio o te drill hiawero takahuri. E kawemai taputapu katoa whakamahia i Germany, Japan ko Taiwan, ki te putanga ā-tau o te kounga teitei, maha-momo drill hiku taringa, .Ko mahi te kaihangarau kāinga runga, i roto i te tapaono-āhua, tapahanga i, miro-awhiowhio, carburize, konutea whakakikoruatia, mīhini mōria, mōkihi, me ētahi atu tukanga, takakawe katoa hono mo te tino, me te pai.