Daim ntawv thov thiab cov yam ntxwv Punch tau siv dav hauv cov khoom siv hluav taws xob, kev sib txuas lus, khoos phis tawj, khoom siv hauv tsev, rooj tog zaum, tsheb thauj mus los, (tsheb, maus taus, tsheb kauj vab) kho vajtse thiab lwm yam kev thim thiab tsim. (1) siab rigidity thiab siab precision ncej yog welded nrog steel phaj a ...
Nyeem ntxiv