1. Looking for documents by business means finding all tax preferential documents related to your company's business, especially finding similar tax preferential policies. 2. Carefully study the preferential conditions and meet the conditions of preferential policies. 3. Carry out the business according to the document and do it according to the business specified in the document, so that you can enjoy the preferential tax policies for this business. Want to know more financial knowledge, welcome to consult McKee Finance and Taxation, and we will serve you wholeheartedly. If you want to know more about finance, please consult McKee Finance.