What are the well-known producers of meat powder, meat and bone meal and chicken powder in China?

I would like to ask my seniors if they want to use the raw materials of meat meal and meat and bone meal. I wonder if there are any good producers of this kind of products in China? Thank you! -- it is very difficult to find enterprises in China that make pure meat powder or chicken powder, mostly made of some dead chickens, chicken racks, expired meat products, mixed with feathers, hoof horns or wheat bran, oil dregs, antibiotic dregs, and so on. When the price of fishmeal is high, it is not necessary to use domestic meat meal. Good ones are hard to find. Is there no good producer in China? How come I've never heard of a famous brand that makes meat powder? Is there really no such thing? -- searching. I don't know, which industry chain does meat powder belong to? The leftovers of the tannery are crushed and the thing that is hydrolyzed is loose meat powder. That's a nice name, isn't it? You can consider its absorptivity and you will understand. Is there anything really made of meat? -- I haven't heard of it, but animal products are used cautiously as feed-it seems that everyone is still relatively conservative! -- passing through to learn from the master-- too much counterfeiting and unstable quality, how to rest assured to use it? It has not been used. It seems that we should really pay attention to it. Be careful.