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GB 50840-2012 Code for construction and acceptance of slurry pipeline engineering
GB/T 2423.18-2012 Environmental testing - Part 2: Test methods - Test Kb: Salt mist, cyclic (sodium chloride solution) (English Version)
GB/T 2828.1-2012 Sampling procedures for inspection by attributea-Part1:Sampling schemes indexed by acceptance quality limit(AQL) for lot-by-lot inspection
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GB 50345-2012 Technical Code for Roof Engineering (English Version)
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GB 50009-2012 Load Code for the Design of Building Structures
GB5226.1-2008 Electrical Safety of Machinery - Electrical Equipment of Machines - Part 1: General Requirements