Hotgen Biotech is one of the top suppliers of IVD biological raw materials in China. Now we could offer the most kinds of raw materials in China and now we have more than 100 kinds of recombinant antigens and antibodies. With excellent quality and high performance, our raw materials-- including recombinant Ag and McAb--have been exported to North America. Our products are very popular for its excellent quality, large batch and little variation between each batch.