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