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See Chinese contents: JB/T 11880.4-2014 JB/T 11880.4-2014: Diesel engines. Selective catalytic reduction (SCR) systems. Part4: Urea solution supply pump
This part of JB/T 11880 specifies the terms and definitions, type and model, requirements, test methods, inspection rules, markings, packaging, transportation and storage of urea solution supply pumps. This part applies to diesel engines and other vehicles equipped with SCR systems. The engines for other purposes can also be implemented by reference.
