first, I am Chinese, so I can understand what the document says.
second, I read it twice, it doesn't metion steroids, or export or anything relate this industry, you can translate the whole page and command/control+F, imput these key words, you couldn't find anything.
third, it is just a document to let online seller be more strict with what they are selling, seller should know where the medecine is produced, and check whether you have the license to sell this kind of medecine, and you should know who you are selling, etc.
fourth, I think the key will shut down the production of steroid is environment pollution, now environment protection is very important in China now, but the characteristic of Chinese government is they will give you a long time to prepare, just like this legislation is out on August, and will be put into effect in Decemember. Currently I didn't hear any news that Chinese government will ban the production or exportation, steroids is a very tinny industry in the whole Chinese Chemical industry. But everyone of us should be ready that day come.