1. Specifications and other information of Antminer S19j Pro are as mentioned in the Overview section.
2. The shipment of this batch will start on a first-paid-first-ship basis for orders which Bitmain has received full payment. We recommend you to be aware of your local customs clearance policies and prepare ahead of time for it to avoid any customs clearance delay or unexpected costs.
3. Please kindly note that power supply is a part of S19j Pro.
4. Please kindly note that the required input voltage for S19j Pro is 220V.

Shenzhen StepAhead is a high-tech enterprise, now mainly focusing on Mask making machines, different types of mask and related raw materials; also produce High-speed flying probe tester, Dedicated bare board tester, legend inkjet printer and AOI. We are a comprehensive manufacturer integrating the upstream and downstream industries of mask supplies. StepAhead aims to provide one-stop solutions for mask factories and mask distributors. Our technician team is experienced experts in the industry, and the company has obtained more than 30 patents, and become a national high-tech enterprise. 

Shenzhen StepAhead has found in Shenzhen for over a decade, our mask machines, mask related materials and masks have sold all around the world, including the USA, Korea, Japan, France, German, Vietnam, Morocco, Brazil, etc.

Since 2020, with the recognized and supported by many customers, StepAhead’s Mask Machines Department accounts for over 50 machines for the monthly sales volume. For after-sales，StepAhead adopts the one-to-one technical guidance, 24 hours online, 8 hours response services plan, to maximize the stability of the customer's machine operation.

The StepAhead Mask Department and the Raw Materials Department are establishing distribution networks and warehouses around the world to reduce transportation costs, and allow our products to be delivered to consumers as quickly as possible.

We are always Keeping our Step ahead.