Custom Precision Manufacturing Solutions
Your One-Stop Partner for Custom Parts Manufacturing
Custom plastic and metal parts, from prototype to production. Yijin Solution offers CNC machining, sheet metal fabrication, die casting, injection molding, and more. We support startups and global enterprises.
- Custom parts as fast as 3 days
- ISO 9001:2015 | ISO 13485:2016 | AS9100D
- Technical support and project coordination from start to finish
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- ⬤Your Details
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Join 3000+ companies who work with Yijin Solution
Custom Manufacturing Services On Demand
Precision CNC machining built for metal and plastic parts, from one-off prototypes through high-volume production. 136+ machining centers and 278 lathes cover 3-axis, 4-axis, 5-axis, and Swiss-type turning in the same facility, so part complexity and batch size stay flexible across the full run.
- Standard tolerances of ±0.05 mm, precision work down to ±0.01 mm, surface finishes from Ra 0.8 to 3.2 µm
- Aluminum 6061/7075, 316L and 304 stainless, Ti6Al4V titanium, brass, copper, and engineering plastics including PEEK and Delrin
- Prototypes ship in 3–7 days with free DFM review; AS9100D, IATF 16949, and ISO 13485 certified
Custom sheet metal parts for prototypes and production runs. 30 fiber laser machines, CNC press brakes, and in-house finishing run under one roof so cutting, bending, and surface treatment stay on the same quality system.
- Laser cutting to ±0.02 mm on steel up to 20 mm; CNC bending ±0.05 mm on 0.5–6 mm material, work envelope 2440 × 1220mm
- Steel, 304/316L stainless, 6061-T6 aluminum, copper, and brass, with anodizing, powder coating, plating, and passivation in-house
- Upload CAD for a DFM review and quote within 24 hours; prototypes ship in 3–7 days, AS9100D and IATF 16949 certified
Turn your CAD files into physical prototypes or end-use parts with industrial 3D printing run entirely in-house. FDM, SLA, SLS, MJF, and DMLS metal printing all sit under one roof, so material choice and finish stay matched to the part’s function.
- Build volumes up to 300 × 300 × 300 mm with layer heights from 0.05 mm (SLA) to 0.3 mm (FDM)
- 50+ engineering-grade materials, from ABS and Nylon 12 to Ti6Al4V titanium and 316L stainless steel
- Prototypes ship in 3–7 days with dimensional inspection and DFM review before production
Custom plastic injection molding from prototype tools to multi-million-unit production programs. Presses from 30 to 1,800 tons run commodity, engineering, high-performance, and elastomer resins, with an in-house mold shop designing and cutting the tooling that runs the parts.
- 100+ resin grades in stock, from ABS and PP through PC-ABS, Nylon 66 GF30, PEEK, PEI, and medical-grade LSR
- General tolerance ±0.1 mm on features up to 50 mm; scientific molding holds tighter classes down to ±0.025 mm
- Tooling in 15–45 days with T1 samples 3–7 days after; production runs 2–4 weeks, IATF 16949 and ISO 13485 certified
Aluminum, zinc, and magnesium die casting services for automotive, electronics, and industrial programs with 30,000+ shots per tool. tolerances held to ±0.05 mm.
- High-pressure die casting (HPDC) with tolerances to ±0.05 mm
- Cold chamber and hot chamber processes, tooling built in-house
- Secondary operations: CNC machining, surface finishing, assembly
- Full documentation: FAIR, material certs, and dimensional reports
- OEM & ODM orders are supported
Custom fasteners in stainless steel, carbon steel, and specialty alloys for automotive, electronics, and industrial programs. Cold heading plus precision turning on 150 cold heading machines and 80+ Swiss-type lathes.
- Cold heading and CNC/Swiss turning with tolerances to ±0.02 mm
- Multi-station forming, secondary threading, and precision rolling
- Heat treatment, plating, passivation, and 100% optical sorting
- PPAP documentation: material certs, dimensional reports, and capability studies
- OEM & ODM supported, IATF 16949 and ISO 9001 certified
Case Study Showcase
Instant Quoting for Custom Parts
Upload your CAD, get pricing in minutes, and move from quote to PO in one workflow. Our online platform replaces back-and-forth email RFQs with a single dashboard for quoting, ordering, and tracking custom parts.
Key Features
- Upload CAD files (STEP, STP, STL) directly in-browser
- Instant pricing backed by free DFM review from our engineers
- Adjust quantity, finish, material, and delivery before checkout
- Confirm production and pay online—no purchase order delays
- Track every quote and active order from one dashboard
Manufacturing What's Next from Idea to Production
Yijin Solution provides global supply chain solutions managed by regional and domestic experts to help organizations scale throughout the product development life cycle.
Ideation
Turn early ideas into clearer product directions before design resources are heavily committed.
Early-Stage Support
- Manufacturability review
- Material & process matching
- Cost & feasibility visibility
How We Support
- Free DFM input
- Direct engineer access
- Drawing & concept support
Product Design
Develop product designs that are easier to prototype, validate, and move toward production.
Design Support
- Appearance & structural coordination
- Manufacturing-aware design decisions
- Design for validation & production
How We Support
- Cross-functional design input
- Engineering-based review
- Output preparation for prototyping
Prototyping
Turn designs into physical prototypes quickly so issues can be reviewed and improved earlier.
Prototype Support
- Prototype route planning
- Fast iteration support
- Early issue exposure
How We Support
- Multiple prototyping processes
- Engineering prototype review
- Continuity into validation
Testing & Validation
Confirm whether the product is ready to move from prototype success to production readiness.
Validation Focus
- Pilot & readiness planning
- Quality & risk assessment
- Cost & execution review
How We Support
- Pilot run coordination
- Quality control planning
- Cross-stage alignment
Production
Build a more stable path to mass production with better control over delivery, quality, and execution.
Production Support
- Production introduction planning
- Assembly & supply chain coordination
- Scalability & stability improvement
How We Support
- Manufacturing resource coordination
- Complex project support
- Ongoing production optimization
All Custom Manufacturing Services
Why Choose Yijin Solution
In-House Manufacturing Capabilities
Every process runs under our own roof — CNC machining, Swiss turning, sheet metal, die casting, injection molding, and finishing. No brokered work, no hidden subcontractors. That means tighter control over quality, faster scheduling decisions, and lead times we can actually commit to.
ISO-Certified Quality System
Our facility operates under AS9100D (aerospace), IATF 16949 (automotive), ISO 13485 (medical devices), ISO 9001, and ISO 14001. Every batch moves through a documented quality management system with full traceability — from material certificate to final inspection report.
Free DFM & Engineering Review
Upload your design and our engineers review it before you pay for a single part. We flag manufacturability issues, suggest tolerance and material adjustments, and estimate per-part cost at volume — so problems get solved on screen, not discovered after tooling.
Comprehensive Engineering Support
One engineering team takes your project from first drawing to final shipment. You will have direct access to the engineers running your job, with coordinated handoffs across machining, finishing, inspection, and logistics. You manage one relationship, not five vendors.
Custom Parts Made by Yijin Solution
Anodized Aluminum
Automotive Casting
Custom Fasteners
Multi Port Manifold
Perforated Metal
Triangular Bracket
Yijin Solution Factory Tour
Step inside our 25,000 m² facility in Shenzhen, where every part we ship is made. Our working factory has 887 pieces of production equipment – 136+ CNC machining centers, 80+ Swiss-type lathes, 278 CNC lathes, 150 cold heading machines, and 30 laser cutting machines – running alongside 281 sets of calibrated inspection instruments.
When you place an order with Yijin Solution, you’re working directly with the team on the floor: engineers, machinists, and QC inspectors operating under AS9100D, IATF 16949, and ISO 13485 quality systems. That direct line from design review to shipped part is how we hold lead times, catch issues early, and keep your production schedule predictable.
FAQs About Our Manufacturing Services
Are you a trade company or a factory?
We are a direct manufacturer. We own our 25,000 m² facility with 887 pieces of production equipment – no broker, no middleman markup.
When can you deliver after payment?
Prototypes ship in 3–7 days. Production runs in 2–4 weeks. Expedited options are available on request.
How do I place an ODM order?
Send your CAD files (STEP, IGES, SolidWorks), reference photos, or a sample part. We return a free DFM review and detailed quote within 24–48 hours.
How do you ensure my design remains confidential?
We sign your NDA before any files change hands. Designs stay locked to the project team—never resold, never reused.
What is your quality control system?
AS9100D, IATF 16949, ISO 13485, and ISO 9001 certified. Material verification, in-process checks, and 100% final inspection on every order, with full documentation included.
Resources
From 80% to 99.8% Yield: High-Precision CNC Machining for a Coaxial Dual-Rotor UAV Motor Mount
In the power system of a coaxial dual-rotor UAV, the motor mount is a critical structural component. It supports the
Bead Blasting vs. Sandblasting: Which Surface Finish Is Right for Your Parts?
Bead blasting vs sandblasting is one of the most common specification decisions in surface finishing, and the right call depends
CNC Rapid Prototyping: How it Works, When to Use it, and What to Expect
When a design is finalized and the team needs a functional part to test, the gap between a finished CAD
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