About RJ Digital Alliance
RJ Digital Alliance is a computer hardware retailer based at Lamington Road, Mumbai, trading since 2021. We sell over the counter and online, we build custom PCs, we repair machines, and we supply businesses in bulk — the same stock, the same people, whichever way you buy.
Visit the shop · Contact us · Get directions
RJ Digital AllianceShop No. 2, Lamington Road, Grant Road East, Mumbai, Maharashtra, 400007
Open Mo-Sa 10:00-21:30
Phone: +919372383903
Who you are buying from
The registered details of the business behind this website.
- Business name
- RJ Digital Alliance
- Address
- Shop No. 2, Lamington Road, Grant Road East, Mumbai, Maharashtra, 400007, India
- Opening hours
- Mo-Sa 10:00-21:30
- Phone
- +919372383903
- +919372383903
- Support@rj-quantum.com
- GSTIN
- 27AXAPC3784A1ZX
- Trading since
- 2021
- Directions
- Open in Google Maps
What we carry
Counted from the live catalogue, so this paragraph cannot become out of date without the number moving with it.
- 14,096 products published on this site — Products published on this website. Being published is not the same as being in stock.
- Products from 197 brands — Distinct brands that have at least one published product. It is not a statement of dealership or authorisation.
- 650 categories holding published products — Categories holding at least one published product, directly or through a child category. Empty categories are excluded.
Counted 13 September 2026 at 04:45 pm IST, directly from the live catalogue.
Our name, and the names you may also see
The business is RJ Digital Alliance. That is the name on our invoices, our Merchant Center account and our Google Business Profile.
This website runs on the domain www.rj-quantum.com. The "RJ Quantum" name in that address is our long-standing technology brand, and it is also the name of the custom gaming PCs we build in-house — the Vajra, Arjun, Bhim and Prithvi systems you will find in the catalogue. It is the same company, the same shop and the same team.
If you have bought from us before under the RJ Quantum Technologies name, nothing has changed about who you are dealing with.
What we do
We stock laptops, gaming and office desktops, graphics cards, processors, motherboards, RAM, SSDs and hard disks, power supplies, cabinets, cooling, monitors, keyboards, mice, printers, networking equipment and accessories, alongside refurbished laptops.
We assemble custom PCs to specification and check part compatibility before building. We repair and upgrade computers and laptops, including machines not bought from us. And we supply businesses, schools, hospitals and government buyers in bulk with GST invoicing and tier pricing.
How buying from us works
Prices shown on the website are live and GST-inclusive. Stock status is shown per product. You can order online for delivery across India, or collect from the counter the same day once stock is confirmed.
Payment is taken through the methods listed at checkout (UPI, Credit Card, Debit Card, Net Banking). Every order can be invoiced with GST. Verified business accounts see their own tier pricing automatically after GST verification.
Warranty and condition are stated on each individual product page rather than promised in general, because they genuinely differ between new, open-box and refurbished stock.
Business and legal details
Trading name: RJ Digital Alliance.
Registered place of business: Shop No. 2, Lamington Road, Grant Road East, Mumbai, Maharashtra 400007, India.
GSTIN: 27AXAPC3784A1ZX.
Trading since 2021.
Website operated by RJ Digital Alliance at www.rj-quantum.com.
Our full customer policies — privacy, terms, returns, refunds, shipping, warranty, pricing and acceptable use — are published in the footer of every page and linked below.
Questions people ask
Is RJ Digital Alliance the same company as RJ Quantum?
Yes. RJ Digital Alliance is the business; RJ Quantum is our technology brand, our web address and the name of the custom PCs we build in-house. One company, one shop, one team.
Is this a real shop I can visit?
Yes. Our counter is at Lamington Road, Mumbai, open Mo-Sa 10:00-21:30. You can buy over the counter, collect online orders and bring devices in for repair.
How long have you been trading?
Since 2021, selling computer hardware to consumers and businesses.
Do you issue GST invoices?
Yes, on any order. Provide your GSTIN at checkout or when requesting a quotation and it will appear on the invoice.