Why are some plastic factories collecting waste woven bags?

Qianwei county Huasheng Plastic Products Co., Ltd., Qianwei county Xinyuan Plastic Products Co., Ltd. Some plastic factories in Qianwei area, such as Qianwei Huasheng Plastic Products Co., Ltd., Qianwei Xinyuan Plastic Products Co., Ltd. and Qianwei Xinda Plastic Products Co., Ltd., can buy waste woven bags for reuse or recycling.