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See Chinese contents: QB/T 2590-2021 QB/T 2590-2021: Enamel units of storage water heaters
This Document specifies the requirements, inspection rules, marking, packaging, transportation and storage of enamel units of storage water heaters, describes the corresponding test methods, and defines relevant terms and definitions. This Document applies to the production, inspection and sales of enamel units of storage water heaters, such as water-stored electric water heaters, heat pump water heaters, solar water heaters, gas water heaters with a rated capacity of no more than 1000 L.
