成人综合婷婷国产精品久,国产精品调教打屁股视频,一区二三国产好的精华液,少妇无码久久综合,中文字幕女a女女女,欧美sss第一页,一级毛片美国洗澡黄色片,午夜精品影视国产一区在线麻豆,国产馆视频在线观看免费,亚洲真人国产高清?毛片


HR

Interested parties please send your resume to:info@kingorgchem.com

  • Synthesis R & D Engineers
    Work description:
    1.Synthesis、pilot production and mass production of fine chemicals;
    2.Organic synthesis;
    3.Performance test of raw material and application test of products;
    Qualifications:
    1.Master's degree or above, with the background of fine chemicals, applied chemistry, and biochemical Engineering, etc.
    2.With pioneering Spirit and clear mind, have control ability of research direction.