4-Chlorodehydromethyltestosterone

Shanghai Longyu Biotech Co.,Ltd. is located in Shanghai, China . We are mainly engaged in pharmaceutical intermediates, peptides,plant extracts, high-tech chemical products and flavors.We have our own R&D center, quality inspection center and manufacturing base.We have professional R&D and scientific management personnel to provide high quality and customized products according to customers' requirements. Customers' satisfactory, Quality control and Safe delivery of our products are the most important concerns and ,in order to fulfil that we have a professional sales team and rich experience in export transportation.Customer satisfaction is the eternal pursuit of the company! We sincerely hope to establish long-term cooperation and common development with our customers.