Mumakore achangopfuura, mukugadzirwa kwepurasitiki, nzira yakakurumbira yekugadzira, iri rolling plastic processing. Roll molding, inozivikanwawo seye rotary molding, rotary molding, inzira ye thermoplastic hollow molding. Roll molding yakatanga kuma1940s kuUnited Kingdom, roll molding yakabuda muna 188...
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