Ukuveliswa komzimba, i-staight yenqwaba yokugqabhuka inyibilikisi ikwisikhundla esiphambili. I-China kunye namazwe amaninzi ehlabathi kuhlala kusebenzisa iindlela zokuchaneka kwinkqubo yemveliso, kubandakanya i-gypsim ephosakeleyo, i-ceramic yokuphosa, ukuphoswa kwe-ceramic, i-thermoset ye-thermoset, i-thermoset i-resing, i-thermoset resing, i-thermoset velo ...