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A boss is a structural or industrial component with a distinctive shape, widely used in various fields such as engineering, construction, and machinery.

A ball valve primarily consists of a valve body, a spherical closure member, a valve seat, and an actuating mechanism.

The cylindrical shell is a structural form widely used in various fields, and its length can be customized to meet specific requirements.

Ring forging, also known as forged rings or metal ring forging, is an ancient and highly technical metalworking process.

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