The CJ/T 168-2002 "Pure Water Machine" standard specifies the product classification and model, technical requirements, test methods, inspection rules, Encasement, marking, transportation and storage requirements of pure water machines. This standard is applicable to pure water machines that use water that meets the sanitary standards of drinking water as raw water and use reverse osmosis (RO) technology to prepare a daily water production of less than 400 L. The standard refers to a series of relevant standards, such as Encasement storage and transportation diagram signs, general rules for household appliances Encasement, safety requirements for household and similar electrical appliances, and sanitary standards for drinking water, etc., to ensure that the design, production and use of pure water machines comply with national standards and safety requirements.