Manufacturing & Procurement Partner
From a single prototype to 1 million units a month.
Metal, plastic, or electronics — we handle it all.
Procurement specialists who handle everything from supplier selection to quality control — all under one roof.
We understand the tech inside your products, so no time is wasted explaining it.
Your manufacturing procurement partner — far beyond a trading company.
NEWJI by the Numbers
Our track record as a manufacturing procurement partner,
combining our own facilities with a broad supplier network.
Grinding precision
On-time delivery rate (FY2025)
Defect rate (FY2025)
Injection molding machines (40–388t)
From prototype to mass production
Automotive, medical, semiconductor & more
Why Choose NEWJI
We are not a trading company that merely passes quotes from supplier to buyer.
As procurement specialists, we understand technology, quality control, and software.
You can trust us with the full scope of your manufacturing challenges.
Scale-agnostic: from a single prototype to 1 million units/month
"I want to start with just one piece" and "I need 100,000 units starting next month" — we handle both through a single point of contact. Leveraging our domestic and overseas OEM partner network, we propose the optimal solution for your volume, lead time, and cost.
Material-agnostic: metal, plastic, and electronics
Our Japan facility handles precision metal machining (milling, grinding, turning), while our overseas facility manages plastic molding (injection, extrusion, blow molding). Through our supplier network, we can also source PCBs, sensors, and enclosures all in one order.
Embedded-software products are no problem
Today's products — IoT devices, wearables, and beyond — routinely include embedded software. Most trading companies stop at the hardware. We go further, technically handling firmware adjustments and app integration as well.
Domestic + overseas facilities for optimized cost design
"High-precision parts in Japan; high-volume runs overseas." We select the optimal production site based on quality requirements, volume, and cost, and design your total procurement cost accordingly. We also implement quality management systems at overseas factories on your behalf.
Technical negotiations with overseas manufacturers — bridged by NEWJI
The biggest challenge with overseas ODM manufacturers is conveying technical specifications. We act as your intermediary — from drafting hardware requirement specs to defining communication protocols — handling the entire technical dialogue on your behalf.
Products We Can Make
"Can you handle something like this?" — Just ask us.
The following are examples of what we have made and what we can do.
IoT & Wearables
- Smart rings
- Fitness bands
- Smart tags & beacons
- Wearable sensors
- IoT gateway enclosures
Firmware tuning, BLE communication design, and app integration included
Industrial Equipment & Machine Tools
- Hydraulic control unit housings
- Precision parts for machining centers
- Robot arm components
- Linear motion guide (LM guide) components
- Collet chucks & tooling
Precision machining to ±0.002 mm grinding tolerance
Consumer Products & Goods
- Plastic enclosures for home appliances & AV equipment
- Cosmetic containers (blow molding)
- LED light covers & heat sinks
- Extruded film for food packaging
- Injection-molded parts for household goods
Injection, extrusion, and blow molding for mass production at our overseas facility
Automotive & Mobility
- Sensor housings
- Precision mechanism components
- Enclosures for automotive electronics PCBs
- Plastic parts for EVs
- Valve unit components
Inspection framework compliant with automotive quality standards
Medical & Healthcare
- Endoscope-related parts
- Precision parts for diagnostic equipment
- Healthcare device enclosures
- Medical-grade plastic molded parts
- Parts for biosensors
Capable of parts requiring high precision and cleanliness
Semiconductor & Precision Equipment
- Parts for semiconductor manufacturing equipment
- Parts for optical measurement instruments
- Cleanroom-compatible parts
- Mechanism parts for electronic component assembly machines
- Reverse engineering of discontinued parts
Reproducible from physical samples, no drawings required
From Inquiry to Delivery
Design stays in your hands. As procurement specialists, we handle
everything from optimal supplier selection to quality control and technical coordination — all in one place.
Concept & Specification Consultation
"I want to make a product like this." "I need to source this part." — Just reach out. No drawings needed; we can start from a physical sample or sketch. We can also advise at the design stage.
Optimal Supplier Selection
We evaluate quality requirements, volume, lead time, and cost holistically, then select the best production partner from our domestic and overseas supplier network. Multi-vendor comparisons are available upon request.
Prototyping & Evaluation
We produce prototypes at the selected facility, verifying dimensions, appearance, and function to identify any issues before mass production. Prototypes delivered in as little as 3 days.
Mass Production & Quality Control
After production begins, we establish in-process inspection and pre-shipment inspection to sustain quality. For overseas factories, we design and operate the entire QC framework on your behalf.
Software Integration (Where Applicable)
When a product contains embedded software, we handle firmware adjustments and app integration. We also manage all technical alignment between the hardware supplier and the software side.
For Startups and Enterprises Alike
We adapt to wherever you are in your growth journey.
Regardless of size or industry, rely on us as your manufacturing procurement partner.
Startups & Ventures
- Rapid prototyping (as fast as 3 days)
- Minimum order quantity: 1 piece
- Minimum viable configuration proposals for MVP & PoC
- Hardware + software-embedded products sourced together
- Start from a physical sample or sketch — no drawings needed
Small & Medium Enterprises
- Cost reduction through VA/VE proposals
- Stable supply for high-mix, low-volume production
- Review and comparison of existing suppliers
- Cost optimization via overseas procurement
- Reverse engineering of discontinued or repair parts
Large Corporations & Global Companies
- Monthly production capacity up to 1 million units
- Quality assurance framework (in-process through pre-shipment inspection)
- QC system implementation at overseas facilities
- Technical specification alignment with overseas manufacturers
- Support for building global supply chains
Processing Capabilities & Materials
In addition to our own facilities, we collaborate with domestic and overseas partner companies,
selecting the optimal production site for each project.
Metal Machining
| Processes | Milling / Grinding / Turning / Wire EDM / Welding / Coating / Heat treatment / Surface finishing |
|---|---|
| Materials | Aluminum / Titanium / Various steels / Stainless steel / Copper alloys / Engineering plastics / Ceramics / Composite materials |
| Tolerance | ±0.002 mm and up (varies by project and production site) |
| Lot size | 1 prototype to tens of thousands for mass production |
Plastic Molding
| Molding types | Injection molding / Extrusion molding / Blow molding |
|---|---|
| Secondary ops | Assembly / Printing / Coating / Packaging (including shipping-ready format) |
| Inspection | 3D measurement / Profile projector / Insulation & withstand voltage testing, etc. |
| Lot size | From prototyping to hundreds of thousands of units/month |
Electronics & PCBs
| PCBs | Sourcing of PCB / PCBA (assembled boards) |
|---|---|
| Enclosures | Sourcing and manufacturing of metal / plastic / die-cast enclosures |
| Assembly | Electronic component installation, inspection, and packaging |
| SW integration | Firmware adjustments and app integration also available |
Wood Processing
| Processes | NC machining / Laser cutting / Bending / Bonding & lamination / Coating & finishing |
|---|---|
| Materials | Plywood / MDF / Engineered wood / Solid wood (Hinoki cypress, walnut, etc.) / Bamboo |
| Applications | Store fixtures & displays / Packaging & wooden boxes / Furniture components / Novelty items |
| Lot size | 1 prototype to thousands for mass production |
Surface Treatment
| Plating | Chrome / Nickel / Zinc / Electroless nickel / Gold plating / Anodizing |
|---|---|
| Coating | Baking coating / Powder coating / Electrodeposition coating / UV coating |
| Other | Black oxide / Parkerizing / Shot blasting / Barrel polishing / Polishing |
| Materials | Iron / Stainless steel / Aluminum / Copper alloys / Plastics (select grades) |
Assembly, Inspection & Warehousing
| Assembly | Mechanical assembly / Electrical wiring / Unit assembly / Cleanroom assembly |
|---|---|
| Inspection | Visual inspection / Dimensional inspection / Functional testing / Durability testing / 100% pre-shipment inspection |
| Warehousing | Inventory storage / Picking / Packing / Shipping fulfillment / JIT delivery support |
| Scale | From small-lot manual work to full production line setup |
Production Facilities
Two facilities — one in Japan, one overseas — balancing quality and cost.
Japan FacilityOjiya, Niigata Prefecture
Full-service metal machining: milling, grinding, and turning. Our facility houses numerous machining centers, NC lathes, and surface grinders. High-precision parts from a single prototype to mass production, with short lead times.
- 20 employees
- Grinding precision ±0.002 mm
- Same-day shipping available
Overseas FacilityDalian, China
Plastic molded parts from prototyping to mass production. Beyond injection, extrusion, and blow molding, we handle assembly, printing, and packaging end-to-end. We build the QC framework from the ground up.
- 31 employees
- 17 injection molding machines (40–388t)
- QC standards unified with Japan headquarters
Beyond Manufacturing Sourcing:
Optimize Your Order Management Operations
By digitizing your internal ordering, inventory, and payment flows while leveraging OEM/ODM production, you can compress costs and lead times even further. NEWJI's DX team walks alongside you from process design through adoption — end to end.
Learn More About DX Solutions →Other Services
Procurement Outsourcing
Hand off RFQs, lead time management, and supplier communication entirely to NEWJI.
Learn More →DX Solutions
We redesign your business processes and support you end-to-end from tool implementation to adoption.
Learn More → NEW
Order Management AI Agent
AI auto-drafts RFQs and purchase orders. Query your internal data in plain language.
Learn More →Contact Us
"Can you make something like this?" "I want to cut costs." "I'm worried about overseas sourcing." —
No matter what's on your mind, we are here to help. Reach out anytime.
Frequently Asked Questions
- Can I consult without drawings?
- Yes. We can work from a physical sample, photograph, or sketch. Through reverse engineering, we can manufacture without drawings. We have completed more than 10 such projects every year.
- What is the minimum quantity for a prototype?
- We start from a single piece. Prototypes have been delivered in as little as 3 days. We also support phased ramp-ups from small lots to mass production.
- Can you handle products with embedded software (e.g., IoT devices)?
- Yes. We can technically handle everything from firmware adjustments to app integration. We also manage specification alignment with overseas ODM manufacturers on your behalf.
- How far does your quality management extend?
- At our Japan facility, we conduct 100% in-process and pre-shipment inspections. At our overseas facility, we have established a QC framework aligned with headquarters standards, with unified inspection criteria and acceptance rules. Our defect rate is 0.02%.
- Can I commission design work too?
- We do not take on design work itself, but we can provide technical advice at the design stage — DFM (design for manufacturability) proposals, material selection, and process optimization.