Our company has three technical service platform of protein purification, such as expression of recombinant protein in E. coli and Pichia pastoris or natural protein purification. We have complete advanced equipment, rich experience in recombinant protein expression and purification, inclusion bodies refolding and in the native protein extraction. Now we have acquired thousands of high-quality recombinant proteins with the many dozens of species through the prokaryotic and eukaryotic expression systems, as well as the expression vector optimization. We also successfully extracted more than 100 kinds of natural proteins. These productions of proteins have been successfully used in protein structure research, cell function tests, immunoassay reagents, recombinant protein drugs, diagnostic reagents development, and many other fields, by the praise of customers around the world.