good post!
Since a week I am trying to find a reliable info about them.
Apparently the company exists 2y already which is a good point but they have never dealed with miners before, at least it is not their main activity.
Since this two year no one received any complaints about them. However it is clear that they are just a simple reseller.

I still have a lot of doubts about them and I also made an order but still did not make a money transfert.

If someone has dealed with Dihao would be wonderful to know your opinion.

PS. numerous of fake accounts exists throught alibaba which claims that they work for Dihao but since the PI is done and you need make a payement they are sending you different bank account