12V Antminer S19j 90Th Bitcoin Mining Machine 3250W

Shenzhen Jconwell Electronic Co., Ltd.

Jconwell was established in 2013, and set up miner subsidiary -GUIHUA Technology Co., Ltd in Shenzhen, China .
We are the biggest agent in China for ANTMINER, WHATMINER and INNOSILICON MINER. We supply to Hydropower station and large mining farm. We have 4 warehouse in Yunan Province, Sichun Province, Hubei Province and Guangdong Province with miner in stock over 30millions RMB.
Our group are one of the earliest professional suppliers for power supply, miner , miner fan, etc., and with over 7 years of rich experience in providing mining farm hosting service and one-stop solutions.
We participate many professional dealing with mining machines in Shenzhen, China, where is one of the biggest miner market in the world.
Our products are well recognized by global customers from America, United Kingdom, Canada, Australia, Japan, Russia, and other countries.

1. In Stock models will be shipped in 3-5 days from Shenzhen warehouse.
2. Used and Second hand Miners will be shipped in 5-7 days.
3. We test all used miners before shipping.
4. All miners will be shipped by DHL, FEDEX, UPS, EMS etc.
5. We will provide you tracking number in 24-48 hours once goods has shipped from our warehouse.
6. Usually shipment takes 5-10 days to reach the destination to anywhere in the world from UPS/DHL/FEDEX.
7. We will notify you all updates about your order on an email.