re:Plastic woven bags - purchase notes

What kind of waste plastic woven bag can not buy
Class 1: plastic woven bags containing toxic, oxidizing or corrosive chemicals. This kind of plastic woven bag in the long-term in full bloom chemicals, chemicals will enter the plastic molecular gap, and difficult to remove.
The second category: loading and dyeing and other raw materials, woven bags, the reasons and the above is much the same. It seems that there are irritating taste, packaging toxic and hazardous chemical raw materials, waste plastic woven bags, we must find out whether the production or purchase, or worth the candle.