This 4G plastic pressure barrel is made of PP, which offers excellent corrosion resistance and stability. With a capacity of 4.0G, it can meet a wide range of pure water storage needs. Its operating temperature range is 1-45°C, adapting to a variety of daily ambient temperatures. Its primary function is to store pure water. It can be used with water purification equipment, providing users with stable pure water storage space and convenient access to a pure water source at any time.