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Filter is an important part of gearbox lubrication system.

All kinds of pollutants in the oil will cause various forms of wear of components.

Filtration technology was already used in ancient China to produce paper made of plant fibers in 200 BC. In 105, Cai Lun improved the papermaking method. In the process of making paper, he uses plant fiber pulp on dense thin bamboo curtains. The water is filtered through the cracks of the bamboo curtain, and a thin layer of wet pulp is left on the surface of the bamboo curtain, which becomes paper after drying.

The air filter element of the crane is mainly used to filter the air entering the engine to avoid damage to the engine by impurities such as dust and sand.

A complete hydraulic system consists of five parts, namely power components, execute components, control components, auxiliary components (accessories) and hydraulic oil.

The emulsion pumping station is mainly composed of an emulsion pump, an emulsion tank, an explosion-proof motor, a coupling and other auxiliary devices.