Top 10 enterprises of self drilling screws in China.

Handan Shuangzi Birta Products Co., Ltd waa soo saaraha ah xirfadeed ee fur qodista iyo siyoodba shirkadaha fur. Tan iyo dhisidii, shirkadda ayaa diiradda saaraya ka-soo-saarka iyo R & D ee fur qodista, taas oo uu dhisay oo casri ah, Heerka sare, miisaanka, noocyo kala duwan oo ka mid ah line xirfad-soo-saarka ee fur dabada layliga. Dhammaan qalabka loo isticmaalo waxaa laga keeno Germany, Japan iyo Taiwan, iyadoo wax soo saarka sanadle ah oo tayo sare leh, multi-duwan dabada daloolin xir .Oo shaqeeya tiknoolajiyadda ugu sareeya gudaha, in lixgeesle-qaabeynta, timmaha, thread-rogid, carburize, zinc plated, mashiinka masaxaada, xirmo iyo geedi socodka kale, link kasta oo u dadaalay si kaamil ah oo ugu wanaagsan.