I will be buying three asic miners soon and I've lost my old asic guy from HongKong china, if you guys have anyone in this country that's a reliable Asic miner dealer please drop me a contact..
One of the people that have experience about bitcoin mining and miners on this forum is philipma1957. You can follow his advice. As for others, I do not know.
My suggestion is that you can also look for sellers on Chinese online sites or offline resellers. I have seen ASICs on AliExpress before and I know that there are many legit online sites in China that you will know which you can use to order for the amount of miners that you want.
If you want to buy in bulk, it is better to contact the manufacturer directly. Like Bitmain. Most ASICs manufacturers are located in China which should make it easy for you to get in touch with any of them.
I will advice you to avoid scammers that will start to send you PM that they can help you.