Sales based on trademarks or trademarks are generally only applicable to some industrial products with stable quality.

Sales based on trademark or brand name means that the buyer and seller use the trademark or brand name of the product as the standard when determining the quality terms of the traded goods to simplify the description of quality. If goods of the same brand and trademark have different models or specifications, in addition to using the brand and trademark, the model or specification must also be specified in the contract.