There are 3 bottles when the front door is opened. No. 1 is recommended for diluting with cleaning products, No. 2 is recommended for moisturizing products, and No. 3 is recommended for repair products. They are all water-based liquids. There is a fourth bottle at the back. After the project is completed, you can use it with physiological saline, clean water, or cleaning fluid to clean the machine. At the end, there is a large sewage bottle, which is used to discharge dirty water during use. If the water in it exceeds 2/3, it needs to be poured out in time.