In china mostly merchants, use Western Union or moneygram to take payments. But beware from scammers,as you can not get your money back.
If you want to use alipay because you have deal with China, then you cant find any alternative. Alipay is popular in China but only China citizen can get the alipay verified account By the way, some of the China site accept paypal, credit card or western union
It is kinda new payment processor which was create on year 2005, i was dealing with china manufacturer for years but never found any of them who are accepting ukash