let me get this straight,

You are in china, and looking for a US based company for mining?

Dont they have way more expensive energy costs?

I would assume you should look to people based on the east where electricity is way cheaper..

After power is paid at 5.95 cents per kWh we split the profit 50/50. Most profitable during a bear market.

My experiences with online mining are not very good.. DCA would have been better.. But i guess this depends on energy and price behaviour..