1. The Vacuum Pump lubricant is BM-14 mechanical vacuum pump oil, which can also be replaced with vehicle oil. The vacuum pump oil should be kept at the normal calibration level. If the vacuum pump oil is reduced, the suction vacuum function will be signifi

There are about 200 million children and adolescents in China. With the continuous improvement of housing conditions for urban residents, children's furniture has become one of the hot spots in the furniture market. Nowadays, the only child in many urban families has

The effect of rain on the sewage suction truck is mainly due to rain and ground dust mixed into a thin layer of mud, resulting in a smooth road surface, friction coefficient is reduced, under normal circumstances, the friction coefficient of the road is abou