During the tax declaration period, the taxpayer shall promptly submit the electronic data of all the required information to the competent tax authorities, and submit the required paper materials to the competent tax authorities within the time limit determined by the competent tax authorities in accordance with the provisions of the tax law (the specific time shall be determined by the provincial state taxation bureaus) (the specific number of copies shall be determined by the provincial state taxation bureaus). After the tax authorities sign for it, one copy will be returned to the taxpayer and the rest will be kept.

The Department of Commerce implements the principles, policies and decision-making arrangements of the CPC Central Committee and the Provincial Party Committee on business work, and upholds and strengthens the Party's centralized and unified leadership over business work in the process of performing its duties. Responsible for domestic and foreign trade, foreign investment, foreign investment and foreign economic cooperation. Draft local laws and regulations on business, formulate business development strategies, plans and policies of the whole province and organize their implementation. Organize and implement the strategy of opening to the outside world, explore domestic and foreign markets, and promote the integration of domestic and foreign trade. Develop a business big data development plan.