Plastic's raw material, process acid medicament and plastic process machine are plastic industry's three biggest essential elements.
塑料原材料、加工助剂和塑料加工机械是构成塑料产业的三大基本要素。
Plastic's raw material, process acid medicament and plastic process machine are plastic industry's three biggest essential elements.
塑料原材料、加工助剂和塑料加工机械是构成塑料产业的三大基本要素。
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