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The Battery Enclosure Specialist Behind India's E-Mobility Growth
AOYIN Holding is a China-based manufacturer focused on one thing: aluminum battery enclosures for two- and three-wheeler EVs — extruded, machined and anodized in one integrated production network.
One Product Focus. One Integrated Network.
AOYIN Holding Co., Ltd. supplies aluminum battery boxes, cases, trays and custom profiles to e-rickshaw and e-scooter manufacturers — with India as our primary market.
Rather than spreading across dozens of product lines, we concentrate on battery enclosures: the alloys, tolerances, finishes and mounting features this application demands. Extrusion, CNC machining and anodizing are managed as one production network under a single quality system, so you deal with one accountable partner from drawing to delivery.
Our CNC machining workshop — the heart of our capability — is our own facility. And every production stage, from extrusion to anodizing, is open for your factory audit at any time.
From Aluminum Trading to E-Mobility Specialist
Fifteen years in aluminum gave us the supply chain. The EV battery boom gave us the focus.
Aluminum Materials & Trading
Started in aluminum materials, building deep relationships with extrusion mills and learning the industry from billet to finished profile.
CNC Machining Workshop Established
We invested in our own precision machining workshop, moving from supplying profiles to supplying finished machined components.
All-In on EV Battery Enclosures
As India's e-rickshaw and e-scooter market scaled, we specialized completely: battery box profiles, end caps, trays and covers became our core business.
Integrated Network, India-First
A complete extrusion–machining–anodizing production network serving battery enclosure buyers, with dedicated support for Indian OEMs and their supply chains.
An Integrated Production Network
Every stage is managed under AOYIN's tooling, quality control and single point of contact — and every facility, including our own CNC workshop, is open for your audit.
Aluminum Extrusion
Custom dies owned by AOYIN. 1,800–2,800 UST presses, 30–300 mm profiles, 6063/6005A/6061 alloys, 20,000+ t annual capacity.
CNC Machining OWN
Our own workshop: 60+ machining centers including 3/4/5-axis, ±0.05 mm precision, first-article and in-process inspection.
Anodizing & Finishing
Type II anodizing 5–25 µm with coloring and sealing, film thickness and adhesion tested every batch, finishing report with each shipment.
What Battery Enclosure Buyers Get Here
Enclosure-Only Focus
We don't do everything — we do battery boxes. That means real expertise in sealing surfaces, mounting bosses, thermal paths and BMS clearance.
Full In-House Machining
The most critical stage — CNC machining — runs in our own workshop, with direct engineering communication and audit access.
Fast Response Cycle
48-hour quotations, 10–15 day tooling for new profiles, engineering feedback on drawings the same day in most cases.
India Market Experience
We understand Indian OEM requirements: cost sensitivity, phased volume ramp-up, and export documentation done right the first time.
ISO-Standard Quality, Fully Documented
- ✓Mill Test Certificate (MTC) with every batch — alloy, temper and mechanical properties documented.
- ✓First-article inspection reports before mass production on every new part number.
- ✓ISO-standard quality procedures across the production network — third-party certification program in progress.
- ✓Full traceability — batch numbers link material, die, machine and inspector from billet to box.
- ✓Export-safe packing — enclosures arrive ready for your assembly line.
Made in China, Built for India
India is our primary market and engineering focus. We also serve EV and industrial buyers worldwide.
Direct Access, No Middlemen
When you message AOYIN, you reach the same engineers and sales team that run your project — on WhatsApp, in English, within hours.
Export documentation, shipping coordination and after-sales support are handled by one dedicated account manager from RFQ to repeat orders.
Let's Talk About Your Battery Enclosure
Send your drawings or sample box — we'll come back with a process plan and quotation within 48 hours.
WhatsApp +86 133 0570 9557 | Email info@aymetals.com
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