Patent--PP Bag Closing Thread 1. high tenacity, light weight, low cost 2. used for pp bag colsing Patent--PP Bag Thread1. our company Patent2. high tenacity, light weight, low cost3. used for sewing Feature:PP Bag thread is our company patent, which has instead of polyester thread 2X3 and 3X3.PP Bag Thread is a blend thread, has high tenacity, light weight, more package rate.