Depending on the situation, if it is processed and used by itself, it needs to bear the responsibility. If it is handled on behalf of the contract, it generally does not constitute infringement and does not need to bear responsibility. If it is simply processing on behalf of others, then the act of attaching a trademark to the goods by the processor in the process of brand-fixing is not a trademark use act to realize the trademark function, and does not constitute a trademark use in the sense of the Trademark Law. Article 3 of China's Regulations on the Implementation of the Trademark Law stipulates the use of trademarks: "The use of trademarks mentioned in the Trademark Law and these Regulations includes the use of trademarks in commodities, commodity packaging or containers, commodity trading documents, or the use of trademarks in commercial activities such as advertisements and exhibitions." In addition, from the perspective of trademark infringement, the use of "using a trademark identical with or similar to its registered trademark on the same kind of goods or similar goods without the permission of the trademark registrant" should reflect the function of distinguishing the source of goods, using the trademark on the goods, commodity packaging or containers or commodity trading documents produced and operated by itself, or using the trademark in commercial activities such as advertisements and exhibitions. Therefore, processing on behalf of others does not constitute infringement.