SparkPool.com is a Global Ethereum mining pool that was initially called Ethfans. Currently, using a PPLNS system and has a minimum payout of 0.05 ETH with a 1% fee. (Difficulty set to 4 billion)
BitMinter was launched on 26 June 2011 and it allows users to mine BTC for a 1% fee while sharing the transaction fees with miners. The coinbase signature for this pool is: "BitMinter"
Pangolin Miner is a mining hardware provider and shareholder of Whatsminer Company. They offer the WhatsMiner M3, a proficient alternative to other Bitcoin ASIC miners. All hardware is fully packed, tracked and will need the customer signature proof. Thus ensuring all products find their way to the customer.