硫黄を必要としている人はいますか？
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コークス工場におけるナトリウムアルカリ式脱硫。硫黄には少量の有機物が含まれており、ナトリウム塩を含む硫黄の含有量は98.5％以上で、無料で提供可能。住所：河北省遷安市
業務交流のグループがあります。QQで探せば、チャンスがもっと増えます
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