美丽人妻被按摩中出 在线_国产专区综合另类日韩一区_亚洲国产综合在线观看不卡_人人妻人人添免费

Custom made processing

With benzoic acid, phthalic anhydride and isophthalic acid as starting materials, the company synthesizes 3,5-Dinitrobenzoic acid, 3,5-Dinitrobenzoyl chloride, 3-Nitrophthalic acid, 3-Nitrophthalonitrile, 4-Nitrophthalic acid, 4-Nitrophthalonitrile , 5-Nitroisophthalic acid, 2-Methyl-6-nitroaniline and its derivatives, which are mainly used as medicine, pesticides, dyes, spices, new material intermediates.
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