direct dyestuffs 中文意思是什麼
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The company ' s products consist of three kinds and forty categories of dyestuffs - sulphur dyes, direct dyes, acid dyes besides intermediates - sulphanilic acid and sulphanilic acid sodium salt
主要產品有硫化、直接、酸性三大類染料四十多個品種, 1999年實現年產染料2000噸。
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