How to announce when supermarket shopping bags need to be paid?

Since June, 2008, all supermarkets, shopping malls, bazaars and other retail places are not allowed to provide plastic shopping bags free of charge. Retail places must clearly mark plastic shopping bags, and charge the price of plastic shopping bags in addition to the commodity price. Passenger trains, passenger ships, buses, planes, stations, airports and tourist attractions are not allowed to provide ultra-thin plastic shopping bags (packaging bags) to passengers and tourists. For those who continue to illegally produce ultra-thin plastic shopping bags, or fail to affix (print) the product identification of qualified plastic shopping bags as required, and there are other illegal acts, they shall be ordered to stop production according to the product quality law and other laws and regulations, confiscate the illegally produced products, confiscate the illegal income and impose a fine.

There is nothing the country can do, or you can adjust the prices of other products to stabilize the cost.