YILU
OEM PARTNERSHIP

We build with you, not for you.

From cell sourcing to PCB design, firmware, and IoT cloud — every step of OEM manufacturing is handled in-house by our Korean team, without intermediaries. From NDA signing to mass production and shipping, we provide an OEM partnership with clear accountability.

01 — DIFFERENCE

Why choose YILU instead of trading-house OEM?

Three differences only a direct OEM — without intermediaries — can deliver.

01

Hardware + control software, unified

Industry Common

Pieced together from separate suppliers. Accountability gets murky, lead times stretch.

YILU

One R&D team owns the full stack — BMS through IoT cloud. Spec changes hit the next lot in one week.

02

Trading house vs. direct

Industry Common

Trading house in the middle. No direct line to the factory. Spec talks and emergencies take days.

YILU

Talk directly to our Korean R&D and manufacturing team. No middleman markup. Decisions in one step.

03

Speed of design revisions

Industry Common

Spec changes apply only to future shipments. Existing-lot issues get back-burnered.

YILU

Self-designed, so revisions hit the next lot immediately. Existing-lot defects swap free of charge.

02 — PROCESS

Five stages, NDA to delivery.

Inputs, deliverables, and lead time made explicit at every stage. From the first meeting, you know what arrives when.

01Stage

NDA & Confidentiality

You share use case and target volume. We sign mutual NDA before any technical work, with damages for breach spelled out in the contract.

INPUT
Your company info, target volume, target spec
OUTPUT
Signed NDA, IP protection agreement
LEAD TIME
1-3 business days
ACTOR
Both parties
02Stage

Spec & prototype proposal

You set use case, market, and cost target. We propose a draft spec and 1-3 prototype units for joint review.

INPUT
Use case, cost target, certification needs
OUTPUT
Draft spec sheet, prototype units (1-3)
LEAD TIME
10-15 business days
ACTOR
YILU design → joint review
03Stage

Pilot run & certification

You confirm the spec. We build pilot units to production spec and run KC / IEC / CE certifications in parallel.

INPUT
Approved spec sheet, certification list
OUTPUT
Pilot units, certification documents
LEAD TIME
30-45 business days
ACTOR
YILU R&D + QC
04Stage

Mass production & full inspection

You issue the PO. We produce, run 100% inspection, and issue a pre-shipment QC report.

INPUT
Confirmed PO, delivery date & quantity
OUTPUT
Production lot, inspection logs, pre-shipment report
LEAD TIME
30-45 business days (volume-dependent)
ACTOR
YILU mfg + QC
05Stage

Shipping & after-sales

You receive at destination port. We ship by sea or air, and swap or repair warranty defects free of charge.

INPUT
Shipping order, destination, warranty terms
OUTPUT
Cleared goods, warranty doc, QC report
LEAD TIME
Sea 7-10 days / Air 2-3 days
ACTOR
YILU logistics + support
03 — TRUST

Your IP is protected — from the contract stage.

OEM means your design, circuits, and know-how flow into our hands. That's exactly why we put confidentiality, IP ownership, and channel exclusivity in contract clauses — not handshakes.

PILLAR 01

NDA confidentiality

Mandatory at project kick-off. Prohibits third-party disclosure, includes damages for breach, and continues 5 years post-termination.

PILLAR 02

IP ownership clarity

We distinguish your IP (appearance, proprietary features) from our shared IP (BMS, boards) in the contract. Reuse of your IP is explicitly prohibited.

PILLAR 03

Channel exclusivity

Contract clause refuses competing OEM in the same market, category, and channel. The market you built — we don't undercut it.

OPERATIONAL RECORD
3,000+units in stockREADY TO DISPATCH
100%on-time delivery (Korea)TRACK RECORD
1 yearfree swap or repairWARRANTY
04 — QUALITY

Four-stage quality control.

Independent QC gates at every stage, from incoming materials to shipping. A problem at any stage stops the next step.

Stage 01IQC

Incoming Quality Control

FREQUENCY
Per lot, sample-based
CHECK ITEMS
Cell capacity & internal resistance (LiFePO4), igniter unit (Kyocera, FF heater), housing dimensions, BoM verification
Stage 02IPQC

In-Process Quality Control

FREQUENCY
Per stage, continuous
CHECK ITEMS
Weld strength, BMS programming, ignition burn-in, insulation resistance, assembly accuracy
Stage 03FQC

Final Quality Control

FREQUENCY
100% inspection
CHECK ITEMS
Charge/discharge cycle, CO emissions, cold-start (-30°C), thermal cycle, BMS function check
Stage 04OQC

Outgoing Quality Control

FREQUENCY
Per shipment, sample-based
CHECK ITEMS
Appearance, packaging, KC labels & cert docs, accessories, shipment count
99.5%shipping quality acceptance rate

Full-process inspection (IQC → IPQC → FQC → OQC) plus random load testing on each shipment lot.

05 — CAPABILITY

Cumulative shipments and certifications.

Korean manufacturing operating since 2018. Numbers below are cumulative Korea-domestic shipments and certifications held.

FF HEATERS100,000+shipped (Korea)
LIFEPO4 BATTERIES20,000+shipped (Korea)
OWN BATTERY MODELS17+models (KC 62619)
CERTIFICATIONS HELD7 KC + 2 RRA
06 — FAQ

OEM FAQ.

Six common questions on NDA, IP, production, and packaging.

Before the first technical discussion. Your use case and target spec already contain confidential information, so we sign the NDA before any concept work begins.

Your unique design, features, and brand elements belong to you. Our shared BMS, board technology, and production know-how belong to us. The boundary is documented contractually for each project.

Same market, same category, same channel — we explicitly refuse competing OEM in the contract. We will not undercut the market you've built.

Tooling for your exclusive design is on your account, with reduction tied to production volume. Common-design tooling is on us.

Outer carton, color box, manuals (multi-language), and accessory lists — all customizable with your branding. You provide design data, we handle printing.

Standard MOQ starts at 100 units. Prototypes (1-3 units) are exempt from MOQ and quoted as a separate prototyping fee.

07 — START

Start your OEM partnership.

Tell us your use case, target volume, and timeline. After NDA, we return a detailed proposal within 5 business days.

Request a ProposalOEM Process Doc (Coming Soon)

NDA → Proposal → Prototype quote in 5 business days

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