Talk to Our Team 
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Production Starts within 1 Day -
ISO 9001 ➕ ISO 13485 Certified
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±1 μm Ultra-Precision Manufacturing
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Ra ≤ 0.1 μm Optical-Grade Surface Finish
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Free Prototype & Lifetime Technical Support
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Full-Service Manufacturing
One-stop solutionBest for new projectsComplete solution including design, tooling, molding, and assembly
One-stop solutionBest for new projectsLearn More -
Injection Molding
Mass productionLarge parts50T–2500T machines for precision plastic parts
Mass productionLarge partsLearn More -
Mold Design & Tooling
Fast lead timeLong mold lifeFrom design to production-ready molds in as fast as 15 days
Fast lead timeLong mold lifeLearn More -
Precision CNC Machining
0.01mm toleranceMulti-materialHigh-accuracy machining for metal and complex components
0.01mm toleranceMulti-materialLearn More -
Custom Automation
+30–50% efficiencyCustom-builtImprove efficiency with customized automation systems
+30–50% efficiencyCustom-builtLearn More
COMMITTED TO DELIVERING WORLD-CLASS PRECISION MOLDING SOLUTIONS
Yijiang is a professional custom manufacturing partner specializing in large-scale injection molding and precision mold development. We support global clients in automotive, new energy, and industrial sectors with in-house tooling, advanced production, and engineering-driven solutions.
Delivered Worldwide
Tolerance Achieve
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Founded as a large-scale molding expert
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%
In-House Quality Control
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Injection Molding Machines
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Countries Served Worldwide
Manufacturing Solutions Across Key Industries
Automotive
Precision machining for automotive engine and chassis components with strict quality standards.
Automation Equipment
Customized non-standard smart production lines for automated workshops.
3D Printing
Provide core component manufacturing and smart production solutions for electronic products.
Aerospace
Provide high-precision component manufacturing for specialized industries, meeting extreme processing requirements.
Medical Devices
Strictly follow GMP production standards, manufacturing medical-grade products like surgical instrument and diagnostic device parts.
Inspection Equipment
Manufacture high-precision sensors and measurement components, ensuring accurate data acquisition for instruments.
Proven by Projects
Real-world projects demonstrating how Yijiang helps teams move from concept to production with speed, precision, and confidence.
Verified Reviews.
Decide with Confidence.
Trustpilot
Corey offered great customer support and service when dealing with my order. I didn’t know exactly what I needed and he made sure I understood what the difference in parts were.
I had a very complex part to make for a prototype car that I am building for my son. No company wanted to take on this task until I found CNC fabrication. They performed the service quickly and professionally. I was very pleased.
Corey was absolutely amazing, literally walking me through getting some things, and talking ke out of things I didn't need!
Excellent communication throughout the project. The precision and quality of the parts are consistent and reliable.
The custom automation line they provided improved our production efficiency dramatically. Very professional team.
Why Choose Yijiang
Real-world projects demonstrating how Yijiang helps teams move from concept to production with speed, precision, and confidence.
Our manufacturing approach is driven by engineering judgment, not just machine capability. From early design review to final production planning, our engineers evaluate geometry, material selection, tolerances, and process feasibility to ensure every part is manufacturable, reliable, and cost-effective.
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Manufacturing decisions are led by experienced engineers, not just machine availability.
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Design-for-Manufacturing (DFM) reviews are conducted before production begins.
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Geometry, tolerance, and material choices are evaluated as a complete system.
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Engineering support continues throughout prototyping and production stages.
Discuss Your Project 
With over 30 high-tonnage injection molding machines, advanced CNC and EDM equipment, and a team skilled in complex precision processes. Our combination of modern equipment, technical expertise, and streamlined operations allows us to deliver challenging parts quickly while maintaining consistent quality.
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Our production processes are optimized for rapid turnaround without compromising quality.
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Real-time project tracking ensures transparency and on-time delivery.
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Experienced teams quickly resolve technical challenges, maintaining workflow continuity.
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Reliable supply chain and advanced equipment minimize downtime and delays.
Discuss Your Project 
We offer comprehensive manufacturing expertise across diverse industries, capable of handling projects of varying complexity and scale. Our team excels in advanced process design, precision engineering, and materials optimization, ensuring that even the most intricate parts meet stringent technical requirements.
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Capable of producing small precision components to large structural parts.
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Skilled in multiple materials including engineering plastics and composites.
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Equipped with advanced injection molding, CNC, and EDM machines.
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Supports custom solutions and complex process requirements.
Discuss Your Project 
We implement a rigorous quality management system that integrates international standards, precise inspection, and environmental compliance. From process control to final testing, every product is monitored to ensure consistent performance and traceability.
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Compliant with international quality standards including ISO9001, IATF16949, and ISO13485.
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Equipped with high-precision inspection tools such as CMMs and profile projectors.
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Products meet international environmental and safety standards.
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Supports full traceability and rigorous process monitoring.
Discuss Your Project 
We build long-term partnerships by combining technical expertise, comprehensive manufacturing capabilities, and responsive client support. Across multiple industries, we provide reliable solutions that meet complex project requirements and evolving market demands.
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Strong experience across automotive, medical, electronics, and other industries.
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Capable of handling complex projects with high technical requirements.
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Responsive client support ensures effective collaboration throughout the project.
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Proven track record of successful long-term partnerships.
Discuss Your Project 
Engineering Support Before Manufacturing Begins
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DFM feedback from experienced manufacturing engineers
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Process and tolerance evaluation based on real production conditions
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Material recommendations aligned with performance and cost targets
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Rapid Prototyping & Validation
Validate your design quickly before committing to tooling or production.
- Fast-turn prototyping to verify form, fit, and function
- Early DFM feedback to identify manufacturing risks
- Flexible process selection for complex or evolving designs
- Production-aware tolerances, not prototype-only assumptions
- Clear recommendations for the next manufacturing step
Discuss Your Project -
Low-Volume & Production Readiness
Prepare your part for stable, repeatable manufacturing.
- Engineering-led process optimization for cost and quality
- Material and surface finish selection based on end-use requirements
- Risk identification before tooling, fixtures, or volume machining
- First article inspection and consistency checks
- Defined manufacturing approach, not trial-and-error
Discuss Your Project
FAQs
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What quality certifications does Yijiang comply with?
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Can you support fully customized product and mold development?
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What level of precision can your manufacturing process achieve?
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Do your products meet automotive and industrial compliance requirements?
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How do you ensure stable quality and on-time delivery?
Ms. Yael was very professional when assisting me with my case and helped lead me to find all the information I needed to move my case forward.
CNC intelligence was communicative and did everything promptly. Very easy to work with.
Ms. Yael was very professional when assisting me with my case and helped lead me to find all the information I needed to move my case forward.
I emailed them about changing to faster shipping, they made it very easy by calling me forward instead of emailing back and forth. fixed my shipping times for me and shipped same day. 5 star for customer service and quality of the part
Yijiang delivered our injection molded parts on time with exceptional precision. Their team is professional and very responsive.