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[国外标准] NFPA 262-2019 Standard Method of Test for Flame Travel and Smoke of Wires and Cables for Use in Air-Handling Spaces

P:2023-09-05 13:21:04

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GRP - glass-reinforced polyester玻璃增强聚酯 (0) 投诉

P:2023-09-06 07:34:54

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black polyethylene compound - 黑色聚乙烯塑料 (0) 投诉

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