In the use of plastic mulch for BOPP film at prbroin gelatinize.在使用拉伸聚丙烯薄膜覆膜时,必须在膜上涂胶.What is the difference between Glassine envelopes & BOPP polypropylene?玻璃纸封套 和 BOPP聚丙烯有什么不同?This machine is used for BOPP 、 PET 、 CPP ...