8. Automotive engines and engineering machinery: air filters, oil filters, fuel filters for internal combustion engines, various hydraulic oil filters, diesel filters, and water filters for engineering machinery, ships, and trucks.

9. Various lifting and handling operations: from construction machinery such as lifting and loading to special vehicles such as fire-fighting, maintenance and handling, ship cranes, anchor windlass, blast furnaces, steelmaking equipment, ship locks, ship door opening and closing devices, The theater’s lifting orchestra pit and lifting stage, various automatic conveyor lines, etc.

10. Various operating devices that require force such as pushing, squeezing, pressing, shearing, cutting, and digging: hydraulic presses, die-casting, forming, rolling, calendering, stretching, and shearing equipment for metal materials, plastic injection molding machines, plastic Extruders and other chemical machinery, tractors, harvesters and other agricultural and forestry machinery for felling and mining, tunnels, mines and ground excavation equipment, steering gears for various ships, etc.