ϵ չҵ񲿾 20,000ƽ //¥ 3/3/2 أkg/m2) 12,0002500 ڸ߶ 8.8 /Сڣx 6x5/ ṩѹ Ҫ Դ ؾӡǽ ú/Ȼ ˮ ˮ ң 8 800ƽ 300ƽ/200 С/λ 140ƽ/80

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