Glad to do business with you, your powder is very fresh, i'm very happy with the quality, we are going to build a stable coopertion with you.
—— Sl Woolford
Very quick delivery. thank you bro,and ,my clients very satisfy, quality even good than other supplier, amazing ! I will back to u soon
—— Michael Edw
Your products perfect, i'm starting to make the more orders and pls give me your best price again
—— Trujillo Tucson
Doublewin Biological Technology Co., Ltd is a renowned pharmaceutical raw materials manufacturer, specializing in raw steroid powders, oral steroids, injectable steroids, Sarms powder,peptide hormones and raw materials medicine in Mainland China. Our factory covers an area of 20000 square meters, with clean environment and nice layout. There are several large-sized, medium-sized workshops and QA and research center with advanced equipments.
We have over 10 production lines , specializing in the produce of steroid powders , injection steroid liquid , peptides , HGH , Sarms , Local anesthetics , API , Pharmaceutical intermediates , Chemical raw materials etc.