internal and external lubricants
Plasticizer, stabilizer,internal and external Lubricants, Pigments next, and same mixed in high Speed Mixer and this dray bland is converted in to granular which is used for formation of lay flat Tubing .
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internal and external lubricants
内部和外部润滑剂
以上为机器翻译结果，长、整句建议使用 人工翻译 。