It depends on which brand the athlete has signed with. For example, ZhangJike, Liu, Zhang Yining, Bohr, glinka, Metz, etc. Previously, Kong, Li Ju,, etc. Signature butterfly; Wang Hao, Wang et al. Qin Zhijian and Wang Nan in the past. Signing the contract is a double happiness; Juck Zhang, et al. In the past, Liu You, Gaiting, etc. The contract was signed by Stica Marin, Han Yang and others to sign Jasaka; Ryu Seung-min signed the contract with arrogance; Laowa and Li Ping signed Daunic, and so on. The athletes who sign the contract can only use this brand of soleplate, otherwise they will pay liquidated damages.

Athletes who have not signed a contract with any brand do not have this restriction, such as Malone (formerly RUTIS of nittaku, now the old Bohr square carbon of butterflies).

There is no provision for rubber covers, but because China has its own characteristics (viscose), Shuangxi almost monopolized the forehand rubber covers of the national team (at present, there are only 729-08 forehands used by Hao Shuai and Wenjia and a few Daunic forehands used by Li Pingping), so other brands can only compete for backhand rubber covers.