1. Consult the local government's coal-to-gas policy to understand the specific measures and policy documents of local coal-to-gas.
2. Consult local energy management departments, such as the National Development and Reform Commission and the Energy Bureau, to understand the specific implementation plan and policy support for changing coal to gas.
3, consult the local gas company or gas supply agencies, understand the specific implementation plan and gas supply situation of coal to gas project.