I will copy here a comment I put on a thread about animal testing. It will give you a good view of the Chinese market as it currently stands and why I personally would have concern about nail products manufactured there.
What you have to consider here is that there isn't an outright ban, it's just an option. Old habits die hard and if China are selling to less enlightened nations that still prefer to have product testing on animals then there will most likely be continuation of the practice.
A few years ago I used to do a lot of work with Chinese producers of all kinds of things from toys and clothes to tools and electrical goods...I would sample a product and provide feedback.
My feeling was that China, having emerged from a relatively recent period of oppression, have embraced the world of production and commerce in a manner akin to a child with ADHD.
Competitive and innovative, but here's the snag, regulation on the quality and safety of products produced hasn't progressed at the same frenetic rate. There is little in place beyond the competition itself to drive this. Sometimes it works fine. If the camera tripod by X is stronger and more sturdy than the tripod from Y it's pretty easy to see. It becomes a problem with things you can't see... like with cosmetics.
If the competition is to have the most colours and effects, the longest lasting or the glossiest gel top coat then that will override less obvious benefits, such as the safety or provenance of the ingredients. Add to that the price competition and the issue is compounded, quality ingredients aren't cheap. The cheaper, lower quality options will likely come from sources that will still embrace animal testing simply because at the moment it's the least expensive option for them.
I think the day will come when this will improve but for now it's easier to deal with the issue by being less than open about production methods and hoping to get away with it.
I warned a friend not to use the new gel remover recently and she came back to me with the ingredients list which made the product look practically organic and very safe. The ammonia and caustic soda were listed in a generic way to make them appear to be natural, harmless ingredients!
Under all these circumstances I personally would not even trust MSDS data at this time. There just isn't the regulation in place to give it authenticity.