1. Online search: Use search engines, such as Google and Baidu. , enter the keyword "belt coal sampling system" to retrieve relevant web page information and supplier information.
2. Engineering consulting company: consulting some professional engineering consulting companies will help you understand the suppliers and related information of belt coal sampling system.
3. Industry associations or organizations: Contact relevant associations or organizations in the coal-fired industry, and there will generally be a list of relevant resources and suppliers, which can provide help.