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The sizes are completely different to sizes anywhere ells I have come to the conclusion they must use elastic tape measures, also the quality of their goods are total rubbish you would get near enough the same quality at somewhere like Primark or your local market.
However the main problem is that most people lose their money and cannot get it back especially with aliexpress this website should be avoided at all costs.

Do not know of a specific company however some general info... Overall asian sizes run 2-3 sizes smaller than US/Western sizes... arm length is shorter, sleeve width is tighter and bust sizes especially for an older clientel is not scaled to size... if looking for silk make sure it is 19momme, lower grade would be 16momme, is it mulberry silk or a silk blend, natural or satin finish. Example... pieces advertized as silk may be "silk chiffon" which is very sheer and low grade... pay for a sample... worth the price to determine quality before buying in bulk

Be wary of buying clothing made in China. The last two things I bought which came direct from cheap, sweatshop manufacturers in China arrived reeking of chemicals which would not come out. You're better off checking out your local resale shops to get a good deal locally.