Grease is the best choice for lubricants that need to adhere to the friction point for a long time, not only because of its excellent lubrication characteristics, but also because it can effectively protect the friction point from external factors, such as splashing, moisture, pollutants, corrosion and wear. In Gearboxes with incomplete oil seal construction, the lubricant must provide sealing effect. Fluid grease has sealing effect, can absorb pressure and effectively prevent wear.