请问中国有那间可信赖的矿场公司,可以放Bitmain Antminer的吗?

Hi,

I have tried to Google and search around but cannot find a good mobile (iOS) monitoring app for all types of miners such as ETH, LTC etc. I hope to get an app which will push notification alert to mobile phone (iOS), combining different types of coins / pools in a single app.

Thanks