Ko te HPMC, e mohiotia ana ko te hydroxypropyl methylcellulose, he taapiri e whakamahia ana i roto i nga momo ahumahi. I roto i te ahumahi hanga, kei te whakamahia nuitia te HPMC i roto i nga rauemi e pa ana ki te ciment penei i te paura putty, gypsum, me te raima ciment. He mahi nui a HPMC ki te whakapai ake i te mahi o te putty pow...
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