polyesterol聚酯多元醇polyestern.聚酯；涤纶polyester fibre sewing thread绦纶缝纫线polyester pre-oriented yarn涤纶POYpolyester with low melt point低熔点聚酯polyester photosensitive film聚酯光敏胶片polyester cotton blended yarn涤棉混纺纱polyester-type polyacrylate聚酯型聚丙烯酸酯polyester amino baking enamel聚酯氨基烘漆polyester production waste gas聚酯废气polyester elastic filament oil涤纶弹力丝油polyester belt isolation layer聚酯带隔离层