Six lines. Two gigawatts. One serial number per module.
Every ems-solar module crosses six automated lines in a plant rated at 2 GW+ per year, running 24/7. From cell stringing to the final flash test, the process is governed by the IEC 62941 quality system — and every unit leaves with a serial number tied to its own test record.
| Lamination | 140–150 °C |
|---|---|
| Cycle time | <1 min |
| EL / IV | 100% per module |
| Standard | IEC 62941 |
Three views of the production floor
Cell-to-module manufacturing under one roof — the process steps you cannot see from a datasheet.
Lamination at 140–150 °C
Cell strings are encapsulated between glass and backsheet — or a second glass layer for dual-glass builds — in a vacuum laminator. Temperature, pressure and vacuum curves are logged per batch, not eyeballed.
Robotics and AOI on every string
MBB/SMBB stringers place and inspect each string; automated optical inspection flags cell cracks before lamination. Six lines share one MES, so a serial number maps to its BOM lot in seconds.
IEC 62941 governed production
The whole plant runs under the IEC 62941 quality-management standard for PV manufacturing: documented processes, change control and audit trails. ISO 9001/14001/45001 cover the management system around it, with audit reports available on request.
Six stages from cell to sealed module
Each stage has its own inspection gate. Your customer's cooperation point is noted where it matters — sample approval and spec freeze before production starts.
Cell preparation
Wafers are sliced and textured into an alkaline pyramid structure. Incoming cell lots are sampled and IV-sorted before they reach the line.
Passivation & metallization
TOPCon tunnel-oxide passivation and screen-printed MBB metallization define the cell's efficiency ceiling — −0.29%/°C for our N-type line.
Stringing
MBB/SMBB stringers weld cells into strings; automated optical inspection rejects cracked cells before encapsulation.
Layup & lamination
Glass, encapsulant and backsheet — or second glass for dual-glass — are stacked and cured at 140–150 °C in a vacuum laminator.
Framing & junction box
Anodized aluminium frame and J-box are attached, then the module is cleaned and prepared for electrical testing.
Testing & packaging
100% EL imaging and IV flash at STC, visual/AOI check, then vertical palletizing at 2 pcs per carton for shipment.
Production line data sheet
The operating envelope of the plant — the same numbers we use to confirm capacity allocation before we accept your order.
| Parameter | Value |
|---|---|
| Annual module capacity | 2 GW+ (six automated lines) |
| Cell formats handled | 182 half-cell, 182×210, 210 |
| Technology lines | N-type TOPCon, HJT, bifacial dual-glass, flexible |
| Lamination temperature | 140–150 °C, vacuum-controlled |
| Stringer type | MBB / SMBB (multi-busbar) |
| Module cycle time | <1 minute per module |
| In-line inspection | AOI on every cell string |
| EL inspection | 100% of finished modules |
| IV flash test | 100% at STC, result stored per serial |
| Traceability | Batch QR + serial → BOM lot |
| Standard module weight | 22–27 kg (framed); 2–5 kg (flexible) |
| Dual-glass build | 2.0+2.0 mm tempered, anti-reflective |
| Quality system | IEC 62941 + ISO 9001/14001/45001 |
| Container load planning | ~900–936 pcs (182) / 620–680 pcs (210) per 40'HC |
Stock for the urgent, slots for the planned
Global shipments reached 536 GW in 2025 — at that pace, capacity allocation is what separates a supplier from a partner. We hold stock formats ready to despatch in 3–7 days, reserve production slots 20–30 days out, and lock OEM capacity up to 30–40 days ahead with a 30% deposit.
- MOQ from 1 pallet (stock) to 1×40'HC (production) — ~900 pcs of 182 half-cell per container
- Capacity allocation fixed for 30 days once your PO is accepted
- ISPM-15 pallets and export packaging engineered for long-haul freight
- Remote video audit arranged within 2 working days; on-site visits Mon–Fri
Your volume, our production calendar.
Send quantity and target shipping date — we confirm slot availability in 24 hours.
