there must be an environmental assessment approval letter, a land factory building permit certificate, and the industrial and commercial registration is now integrated with the three certificates, and the industrial and commercial, taxation and organization codes are the same. It is necessary to set up a company to produce and sell this kind of automobile glass water, obtain a business license, and handle the national tax and local tax and organization code certificate. Secondly, apply for a production license to see if it is compulsory certification. If it is, it is necessary to apply for compulsory certification, bar code certificate, qs standard and other procedures. Then it can be produced and sold.