20L automatic filling production line is widely used in many industries, including but not limited to petrochemical, fine chemical, daily chemical, oil, medicine and so on. It is especially suitable for filling coatings, paints, inks, adhesives, curing agents, dyes, cleaning agents, oil, lubricants, edible oils, flavors, solvents, additives, food additives, pesticides and other liquid products, especially those flammable explosive, highly corrosive and toxic, prone to foam, easy oxidation, volatile liquid products.