What are the sales keywords of plastic bags?

In fact, the biggest selling point of plastic bags is availability, wide range of use, easy to carry, low cost and easy to be accepted by people; Speaking of keywords, it's quite big. Do you make plastic bags or sell plastic bags? For example: food soft packaging, frozen product separation bag, fresh-keeping anti-fog bag, printing bag, special-shaped bag, customized bag, etc. These are all key words. Where do you want to apply the key?