Top 10 enterprises of self drilling screws in China.

Handan Shuangzi Chitsulo Zamgululi Co., Ltd ndi katswiri wopanga wa pobowola wononga ndi pogogoda mabizinezi wononga. Popeza pochimanga, kampani wakhala moganizira yopanga ndi R & D wa pobowola wononga, amene wamanga ano, wapamwamba, lonse, zosiyanasiyana mzere akatswiri kupanga kubowola mchira wononga. zida zonse amagwiritsidwa ntchito kunja kwa Germany, Japan ndipo Taiwan, ndi linanena bungwe pachaka wa high quality, Mipikisano zosiyanasiyana kubowola mchira kagwere .The ntchito pamwamba technologist zoweta, mu hexagon-ulili, zodula, ulusi-pakubwezeretsa, carburize, nthaka yokutidwa, makina ochapira makina, phukusi ndi njira zina, aliyense kugwirizana amayesetsa kukhala wangwiro ndi yabwino.