塑料异型材挤出工艺 -塑料异型材挤出工艺 塑料异型材挤出工艺按共挤材料的成型状态可以分为前共挤和后共挤两类。前共挤...
Surface quality and inspection requirements for injection molding:① The raw material must be fully dry according to the process requirements, without moisture, otherwise there will be silver grain ...