Provista Copolymer ST Eastman Chemical Company Polyester, TP Eastman Provista Copolymer ST is a resin specifically developed for profile extrusion where high clarity and gloss, toughness, and processability are critical. Eastman Provista Copolymer ST is a second-generation material that complements Eastman Provista by offering similar features, while providing greater toughness. Eastman Provista Copolymer ST is ideal in applications that place greater physical demands on the profile

PETG,PCTG,PCTA都屬于是一種非結晶型共聚聚酯的高透明塑料.PETG塑料制成的板材通常比通用壓克力堅韌15至20倍，比抗沖改性的壓克力堅韌5至10倍。PETG具有玻璃一樣的透明度和接近玻璃的密度，很好的光澤度，耐化學腐蝕，耐沖擊可制成復雜外形容器的包裝，具有高吸塑力，高光澤，低霧度，易于印刷，不易脫落

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