Shipping & After-Sales

1. Shipping Policy

1.1 Shipping Methods

We partner with trusted logistics providers (DHL, FedEx, China Post) to select the optimal shipping method—based on your address, order urgency, and package specs. For urgent orders, DHL/FedEx are recommended for expedited international delivery.

1.2 Delivery Time

  • Domestic (Mainland China): In-stock orders ship in 1–2 workdays; 3–5 workdays for most areas, 5–7 for remote regions.
  • International: In-stock orders ship in 1–2 workdays; transit times: North America (5–10 workdays), Europe (5–8), other Asia (3–7), rest of world (7–12). Extended by customs/holidays (we’ll notify you).

1.3 Freight Calculation

  • Domestic: Free delivery for orders ≥ CN¥5,000; under CN¥5,000, freight is weight/address-based (shown at checkout).
  • International: Calculated by weight, volume, destination, and shipping method (transparent at checkout). Bulk orders (10+ miners) get exclusive freight discounts.

1.4 Logistics Tracking

Post-shipment, you’ll receive a tracking number via email (with logistics provider links). Track real-time via your efminer.com account > “Order Inquiry”.

2. After-Sales Policy

2.1 Warranty Scope

12-month comprehensive warranty (from delivery date) for manufacturing/material defects—covers hash boards, power modules, control boards, cooling systems. Requires proof of purchase.

2.2 Non-Warranty Scope

No coverage for:
  • Damage from improper use (unauthorized disassembly, wrong power, extreme environments: >35°C, >80% humidity, high dust).
  • Force majeure (earthquakes, floods, lightning).
  • Out-of-warranty (over 12 months) or third-party repairs/modifications.

2.3 After-Sales Process

  1. Fault Feedback: Contact us via 24/7 online chat (efminer.com), hotline +86 136-8094-3063, or email grease@enerforcepro.com (include order number, model, issue details/photos).
  2. Diagnosis: Engineers respond within 24 hours for remote troubleshooting.
  3. Repair/Replacement: Free return shipping for warranty cases; repairs in 7–10 workdays, or replacement for irreparable defects.
  4. Follow-Up: Post-service check-in + maintenance tips.
Mainstream Models

Covers hot models from leading ASIC miner brands; supports multiple algorithms (SHA-256, Scrypt, etc.)

24/7 Support

24/7 technical backup, modular design for easy upgrades; 5-year hardware life + free firmware updates

Rapid Deployment

Global hub stock, same-day shipping; pre-configured for instant use

Factory-Direct Pricing

Transparent factory prices, with advance booking and stock preparation to stabilize costs, boosting cost-performance