Plhaub molding txheej txheem
Plhaub casting yog txheej txheem txheej txheem ntawm kev ua plhaub nrog cob-coated xuab zeb. Ob lub plhaub sib txuas ua ke los tsim cov kab noj hniav, yaj hlau dej thiab nchuav rau hauv cov kab noj hniav.
Cov txheej txheem tseem ceeb yog qhia hauv daim duab hauv qab no
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