What are the main domestic and foreign companies that buy antibodies?

The antibodies of abcam, Sigma and cst are all good, but the price is more expensive and the antibody quantity is less. Santa's antibody quantity is relatively large, but the quality is unstable, so it is necessary to take a chance. Domestic products are much cheaper. I recommend ten thousand kinds of creatures. I have tried many antibodies in his family, and the test paper is good.