I would stay away from anything Chinese made. I know it doesn't help your answer but after 4 grand in vet bills 2 years ago. Two of my dogs got sick at same time with exact same issues. Only thing it could have been was pet food treats. That I'm positive of. I learned the hard way research is key for your pets health and pocket book.
Just an Fyi, Something else I learned aftewards during my research. The cheap Chinese supplement industries forced the US dog supplement makers out of business. Most dog/cat food makers do not produce their own supplements/vitamins added to their pet foods. Those supplements are comming from China and their is little oversight if any over the Chinese supplements. Testing is non existent from reports I have read..
Chinese brand X pet food kills or makes one's pet sick. It may have actually been the added supplements/vitamins that were the culprit.
Example and bigger picture is 5-10 other brand pet foods even ones claiming to be US made were using the same batch of supplements/vitamins. After all of this I notice a lot of a certain companies premier brands all say packaged in Phoenix. The entire contents come in from China in bulk. I had thought brand I was using used to say made in USA and had flag. I looked afterward and all that companies brands have same packaged in Phonix. A year or so later, a friend said they use same compat but their new brand and its made in USA. They were trying trying to recommend it after hearing our experience. Um no, they won't even acknowledge their was an issue and two, I'm betting in a year it will be made same place the rest of their products are.
Unkess things have changed, since I did my research only 2 pet food companies in US have facilities where they make their own supplements/vitamins. They don't sell to any other pet food companies either.