Vuam kab yog dab tsi Welding kab tseem hu ua welding mark, flow mark.Nyob rau hauv cov txheej txheem txhaj tshuaj molding, thaum siv ntau lub rooj vag los yog qhov muaj nyob rau hauv cov kab noj hniav, los yog inserts thiab cov khoom uas muaj kev hloov loj nyob rau hauv thickness, qhov ntws ntawm yas yaj tshwm sim nyob rau hauv cov pwm nyob rau hauv ntau tshaj 2 di ...
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