Lub luag haujlwm ntawm lub hau ntswj yog txuas ob lub workpieces ua ke los ua ib qho fastening. Screws yog siv rau hauv cov khoom siv dav dav, xws li xov tooj ntawm tes, khoos phis tawj, tsheb, tsheb kauj vab, ntau yam cuab yeej siv tshuab, khoom siv, thiab yuav luag txhua lub tshuab. Screws yog xav tau. Screws yog indispensable industrial n ...
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