The invention relates to a preparation method of compound thermal stabilizer in plastic processing additive and pertains to the technical field of plastic processing additive.
本发明涉及塑料加工助剂中复合型热稳定剂的制备方法，属塑料加工助 剂技术领域。
2
The invention discloses the equipment specially manufacturing the steel plastic tube, which is the steel plasticcompound machine.
本发明公开了一种专门生产钢塑管的设备：钢塑管复合机。
3
Packing: it is packed with plastic bag as inner layer, and a compoundplastic woven bag as the outer layer, the net weight of each bag is 25kg.