COC grip device is an instrument used to exercise the grip strength of fingers, which can help improve the strength, endurance and flexibility of fingers. In China, COC grips can be purchased in the following ways:

1, JD.COM, Tmall and other e-commerce platforms: COC grip devices are sold in all major e-commerce platforms, and you can search for keywords such as "COC grip device" or "grip ball" to buy them.

Fitness equipment stores: COC grips will also be sold in major fitness equipment stores. You can go to the local fitness equipment store to buy them.

3. Online professional fitness equipment stores: There are also specialized fitness equipment stores in China. These stores usually provide more professional fitness equipment, including COC grips, which can be purchased through official websites or other shopping platforms.