zanadoo, I would be extremely wary about buying sheets from China.
Many items that are made in China (without coming under the auspices of a brand name where quality control comes into play - I am talking about unbranded items) may look fine, seem fine, etc., but the long term result or effect aren't known for some time.
When it comes to fabric/textiles, I want to be absolutely certain that no toxic dyes with possibly carcinogenic effect were used. Since sheets are in close proximity to a more-or-less unclothed (or minimally clothed) body for hours each night, that is a great deal of exposure. Buying mass-produced sheets in Australia was ALSO problematic, at least in 2014 when this article in Choice was written.
This article is more up-to-date and focuses on what hazardous chemicals are routinely used in textiles made in China, primarily the lower-cost items.
Whatever is made in China should - in my view - be rigorously tested. The biggest risk is buying directly from China, as there is zero, zilch, NO testing or requirement to meet quality control or standards... just Australian consumers buying directly from Chinese sellers and believing that they have bought reasonably good quality at a good price. There's still a risk in buying from brand names here in Australia or from the UK or US - less risk from the US as they've considerably raised their standards of testing... Both UK and Australian brands have had some rocky moments. For example, Sheridan had to lift their game considerably after a particular case about five years ago.
The point is, though, they DID lift their game. The testing and quality control are now of a standard that reassures me.
All of this contributes to why I wouldn't even think of buying some items from Chinese sellers. I don't trust that a label on Chinese plastics saying BPA-free is truthful; I don't trust that silicone cooking / baking items are in fact food-safe, and I don't trust the components of an iPhone sold by a Chinese seller will be of the necessary raw materials to meet the product requirements.
Chinese eBay sellers continue to flourish because Australian sellers look at the product's appearance (which is designed - mostly - to fool the eye) and immediate apparent performance (which is - again - designed). The buyers don't put the product through the sort of testing which would reveal what is actually "under the hood", and in the case of fabrics/textiles, any damage caused would probably take years to manifest... In my view, it is not worth the risk, and I won't take it.
