There is a Koreatown in Qiaotou Street of Liuxiang, and there is a crystal shop on the first floor. Their home is wholesale, and the price is very cheap. I am an old customer and have the phone number of the owner of that store called Crystal Accord. When you buy it, say it was introduced by a friend. I think he can give you the wholesale price. It's a facade shop, not in Koreatown, but in Qiaotou Street, diagonally opposite Baidu Pearl.