Silicone nkhungu, yomwe imadziwikanso kuti vacuum mold, imatanthawuza kugwiritsa ntchito template yapachiyambi kupanga nkhungu ya silikoni mu malo opanda kanthu, ndikutsanulira ndi PU, silikoni, nayiloni ABS ndi zipangizo zina mu vacuum state, kuti apange chitsanzo choyambirira. . Chifaniziro cha mtundu womwewo, kuchuluka kwa kubwezeretsa kumachitanso ...
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