CEMA is a company that specializes in providing quality bearings for bicycles. All CEMA bearing products are designed to reduce friction and have a longer service life compared to other standard products. The company offers a range of products, including hybrid ceramic bearings, corrosion-resistant all-ceramic bearings, and professional bearing tools for safely removing and installing bearings on bicycles. CEMA also sponsors various events related to cycling, such as China Cycle 2023. CEMA bearings are manufactured with ABEC5 tolerances and the highest quality components available on the industrial market, making them ideal for professional cyclists who want their bikes to be like a want to treat professionally.