The surface coated special insulation material, good electrical performance, strong moisture resistance.
外表涂特种绝缘材料，电气性能好，防潮能力强。
Old concrete surface must be cleaned by water and then coated.
旧的混凝土面必须先用清水冲洗干净，晾干后涂刷。
Old concrete surface must be cleaned by water and then coated.
旧的混凝土面必须先用清水冲洗干净，晾干后涂刷。
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