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Professional Attention and Professional Care


4gltesolution Quality Control From Sourcing to Delivery

At, even before your order is placed – whether as a wholesaler, distributor, or someone who's just looking to buy the latest gadget – our products are streamlined into a system that checks and double checks quality, from sourcing to delivery.

Our Streamline Service:

     1. Sourcing your products 
     2. Processing your product order 
     3. Testing your products 
     4. Packing your products 
     5. Tracking your products






12 Months Warranty 
With all our products manufactured to the highest quality standards we are confident that you will enjoy years of excellence.  However, occasionally even the best quality products can sometimes go wrong . That is why at JA CORP., we offer all our customers a full 1-year Warranty against product quality failure.
If your usb modem within its guarantee period we will arrange for replacement to you within 1 week. You can return us with the RMA no. If out of guarantee period, we will offer our repair service to you, charge with very reasonable repair fee.

 Delivery Guarantee :

  • 1,Orders will be shipped out within 1-3days normally after receipt of payment.
  • 2,Delivery may be delayed during Christmas, Chinese new year, and other holidays. We will try our best to ship out as early as possible.
  • 3,Tracking no. & shipping documents will be sent to customer within 1 business day after delivery.

Our Hot line: 00852 69499341


JA CORP. Guarantee also covers:

1,All our products are brand new and original, 100% trustful
2,We do not sell second hand or refurbished modems, do not cheat any one of our customer
3,We have after-sale service , all your questions will be replied within 2 business days
4,We contact our customer once a week either by email or phone to check if they need our further assistance.