Butterfly valve, also called the flap valve, is a valve with a disc (clackor plate) as stopping component, revolving around the axis to the effect ofopening and closing. Butterfly valve is a kind of regulator with simplestructure....
Thehousing is an important component of the motor. It is the base of thetransmission parts, and it should have enough strength and rigidity. Thecase is usually made of gray iron, which has good casting performance and ...
Laptop shell is a critical part for protecting laptop itself, also affects the heat-dissipation effect, weight and aesthetic perception. The common materials of laptop shell include alloy and plastic, etc. Alloy shell includes aluminum a...
Water pump is a machine for conveying liquid or increasing press, it transports the mechanical energy or energy from external sources to liquid, also increase liquid energy. It plays a major role in conveying liquids includes water, oil,...