Bitcoin miner maker MicroBT has rapidly expanded market share by selling over half a million units in 2019, chipping away at rival Bitmain's dominance.
MicroBT sold about 600,000 units of its flagship WhatsMiner M20 series last year, Vincent Zhang, sales head of the Shenzhen-based company, said in an online panel hosted by Chinese mining pool Poolin on Thursday in a WeChat group.
