1. China ROMILLE (China’s well-known trademark, one of the world’s largest comprehensive engineering plastic bearing manufacturing companies, China’s most competitive brand, ROMILLE Plastic (Shanghai) Co., Ltd.)

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2 Japan NSK (started in Japan in 1916, the first manufacturer to design and produce bearings in Japan, the earliest domestic bearing trial product in Japan, NSK Investment Co., Ltd.)

3 Germany FAG/INA　(A global leader in the production of rolling bearings and linear motion products, one of the largest family business groups in Germany/Europe, Schaeffler Investment (China) Co., Ltd.)

4　TIMKEN　(1895 United States, the world's leading manufacturer of high-quality bearings/alloy steel and related components and accessories, one of the top ten bearing brands, Timken (China) Investment Co., Ltd.)

5 Japan NTN (founded in 1918 Japan, one of the world's largest bearing manufacturers, a large multinational group company, one of the top ten bearing brands, NTT (China) Investment Co., Ltd.)