Since June 14, bitcoin mining difficulty and computing power have risen more than 60%. Some new ASIC mines are on the line in the summer, with an average power of about 55 TH / s. Assume that the increased 35 EH/s of computing power since mid-June comes from these top models, which means that more than 500,000 such miners are connected to the Bitcoin network (1 EH / s = 1 million TH / s) . These ASIC miners are produced by major manufacturers such as Bitmain, Canaan, InnoSilicon and MicroBT, each ranging in price from $1,500 to $2,500. Therefore, if more than 500,000 pieces are delivered, these mining manufacturers may have earned $1 billion in revenue in the past three months. In addition, according to TokenInsight, it is expected that more miner suppliers will enter the market in the coming months. With the sharp rise in bitcoin prices, the bitcoin mining market experienced significant inflation in the second quarter of 2019. Most miners from different manufacturers are seriously out of stock, and pre-orders submitted in the second and third quarters will be delivered before the end of the year.