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Polyethylene granules. Plastic resin. White plastic pellets. Raw material for plastic products. Grains pouring in a heap. Coloring concentrates and additives for plastics

视  频 ID：  1091392401
版      权：  yorgil
视频长度：  0:30
横纵比率：  16:9
所属分类：  科技 工业 
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