Chinese and English bilingual comparison rich geographical information. Metal ball holder flexible rotation 360-degree rotation no rust S-shaped design observation is more convenient. Manufacturered by TMY. Exquisite base made of high-density wooden base solidly made durable and stable. One-time forming of the compression-molding sphere makes the spheres more firmly combined improving the aesthetic speed reading and compression resistance and coordinating the appearance. The spherical surface is smooth and clean smooth and clean the color is fine the workmanship is fine and the structure is stable.