cc523pate 发表于 2017-12-11 22:52:52

PD CEN/TS 12200-2-2017 Plastics rainwater piping systems for above ground extern

PD CEN/TS 12200-2-2017 Plastics rainwater piping systems for above ground external use —Unplasticized poly(vinyl chloride) (PVC-U) — Part 2: Guidance for the assessment of conformity


admin 发表于 2017-12-13 18:48:04

谢谢您的分享，金币已奖励!
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