What are the main supporting materials that should be provided when applying for recognition of a well-known trademark? (1) Materials proving the relevant public’s awareness of the trademark. (2) Materials proving the duration of use of the trademark, such as the history and scope of use and registration of the trademark. If the trademark is an unregistered trademark, materials proving that the trademark has been used for no less than five years should be provided. If the trademark is a registered trademark, materials proving that it has been registered for no less than three years or has been continuously used for no less than five years should be provided. (3) Materials proving the duration, extent and geographical scope of any publicity work for the trademark, such as the methods, geographical scope, types of publicity media and the amount of advertising in the past three years. (4) Materials proving that the trademark has been protected as a well-known trademark in China or other countries and regions. (5) Other evidence materials proving that the trademark is well-known, such as the sales revenue, market share, net profit, tax amount, sales area and other materials of the main products using the trademark in the past three years.