Trademark paper also has ups and downs, depending on whether it is domestic or foreign raw materials. If it floats, it can be salvaged manually in the equipment or separated from the equipment. If it sinks, it will be in trouble, and you must choose it manually. There is no other way. If the equipment is classified, the investment will be too large. Some trademark papers on foreign bottles sink to the bottom, and some float in the middle, which will not fit. Good classification of floating, sinking to the bottom can also be classified, even if you can't get up and down, you will float in the middle.