https://www.reuters.com/article/us-china-fintech-bitmain/chinas-bitmain-suspends-sales-of-cryptomining-machines-after-beijings-mining-ban-idUSKCN2E1048 >SHANGHAI (Reuters) -Bitmain, China's biggest maker of cryptocurrency mining machines, said it had suspended sales of its products in the spot market to help ease selling pressure following Beijing's ban on bitcoin mining.