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  • 在线播放国产一区二区三区,亚洲熟妇色自偷自拍另类,最近2019中文字幕国语免费版,成人免费国产精品视频,精品国产福利片在线观看,欧美一级艳片欧美精品,亚洲日韩中文字幕无码专区,国产在线精品一区二区不卡顿
    Zhengzhou Changkuan Technology Co., Ltd.
    Technology

    We emphasize technological innovation, and make it our core competitiveness and development motivity. We have close cooperation with numerous scientific research institutions and colleges in China. We are skillful in various reactions since their reaction temperature is from -78ºC to 260ºC, or their reaction pressure is from negative pressure to 6.5 MPa. We can conduct about 20 kinds of organic reactions including halogenating reaction, organometallic reaction, and coupled reaction. We can meet clients’ demands of orders from gram level to tens of tons level.

    We are skillful in the following reactions:
    • Iodination
    • Cross-coupling reactions
    • Hoffmann rearrangement
    • Organometallic reactions (Zn, Al, Mg, Li, Cu)
    • Huang Minglong modified wolff-kishner reduction
    • Distillation (from atmosphere pressure to 0.2Pa)
    • Amidation
    • Chlorination Bromination
    • Broad temperature reactions ( -78ºC-260ºC)
    • Cyanation
    • Column purification
    • Crystallization
    • Dehydrogenation
    • Esterification
    • Friedel Crafts(acylation and alklation)
    • Fritsch-Buttenberg-Wiechell rearrangement
    • Fries rearrangement
    • Hydrogenations (at atmosphere pressure or higher Pressure)
    • Oxidation
    • Reduction with metal hybrids or hydrogen





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    Copyright(C)2025 , Zhengzhou Changkuan Technology Co., Ltd. All Rights Reserved.  Supported by  ChemNet  ChinaChemNet Toocle Copyright Notice

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