Desmethylcarfentanil acid

Longschem specialized in intermediates, raw materials, LCD materials and other compounds,operating two company鎶痜actories and R and D. in order to a product鎶痑dvantages and technology advantages, the company and the Shanghai Institute of Organic Chemistry, Chinese Academy of Science, Zhejiang University, East China University of Technology, provided the basis for future substainable development. Longschem undertaking entrusted processing business and open new business, we will strictly abide by i...