1. First of all, you need to register on the website of Nanning Administration for Industry and Commerce and fill in relevant information.

2. You need to prepare the company name, business scope, legal representative's identity certificate, registered capital and other materials, and go to the Industrial and Commercial Bureau for filing.

3. After the declaration is successful, you need to go to Nanning Taxation Bureau for tax registration and apply for an invoice.

4. According to the requirements of Nanning, it is necessary to obtain relevant licenses and qualifications for handling natural gas filling business.

After completing the above steps, you can find a partner in Nanning natural gas replacement business market, sign a contract and start a business.