We support prototype verification to stable mass production for automotive hardware, 3C audio equipment, drone structural frames and AI liquid cooling shells.
Our in-house workshop completes 5-axis milling, turning processing and full surface treatment with strict full dimensional inspection.
Our integrated production system resolves multi-supplier management troubles, delivers consistent ±0.01mm tolerance, and effectively controls your overall procurement cost & project lead time.
Headquartered in Dongguan, Guangdong Province, Rejin CNC manages fully self-owned production workshops backed by qualified, vetted partner resources across China. We deliver integrated precision manufacturing services centered on CNC machining and sheet metal fabrication. We accommodate the full lifecycle of your projects, covering rapid prototyping, low-volume trial manufacturing and stable large-batch mass production. As your dependable long-term OEM manufacturing partner, we produce sophisticated custom structural components with guaranteed high precision, controlled lead times and consistent product reliability for global buyers.
Rejin CNC manufactures tight-tolerance CNC machined housings and structural components for four high-growth industries. Our IATF16949-compliant machining processes meet strict quality standards for automotive electronics, professional audio hardware, drone frames and AI liquid cooling heat sinks to support stable large-volume commercial mass production.
We establish standardized full-process production workflows for mass OEM orders. With in-house anodizing, sandblasting and complete surface treatment production lines, paired with a full-lifecycle quality monitoring system, we effectively cut the risks arising from multi-supplier coordination. We deliver consistent long-term batch supply for audio housings, control panels, industrial enclosures and all types of precision metal components.
We are a professional Dongguan factory focusing on precision CNC machining & metal enclosure mass OEM production for global industrial buyers.
Supported by standardized production lines, IATF16949 quality management system and full in-house surface treatment processes, we steadily control product tolerance within ±0.01mm for long-term bulk orders.
Our mature technical team provides one-stop services from drawing DFM optimization, sample trial production to mass delivery, effectively cutting your supply chain costs and avoiding quality instability caused by outsourced processing.
At Rejin CNC, strict quality control runs through the whole manufacturing workflow. Our professional QA team carries out full-process rigorous inspections from pre-production verification to finished goods delivery, boosting your first-pass yield and stable batch consistency.
Backed by IATF16949 and ISO standard management systems, we keep stable ±0.01mm precision for CNC machined housings and structural parts during prototyping and mass production, delivering reliable custom manufacturing services for your long-term orders.
For any questions on custom CNC fabrication, quote evaluation and manufacturing cooperation, please contact us anytime. Our dedicated team delivers timely responses for all your demands.
Every successful product starts with a manufacturability check. Upload your CAD file to instantly receive automated DFM analysis on key factors like geometry, tolerances, and wall thickness. For critical projects, our engineers perform a detailed manual review within one business day, providing clear, actionable recommendations on design adjustments, materials, and processes to ensure quality and avoid delays.
We combine in-house manufacturing with a vetted partner network under strict quality standards. Unlike intermediaries, we provide integrated engineering support, from prototyping to full-scale production and packaging. With dedicated project management and a focus on industries like automotive, medical, and electronics, we ensure reliability, consistency, and seamless scale-up for every order.
Lead time is determined by part complexity, production volume and required manufacturing processes.
Rapid CNC & 3D printed prototypes can be delivered within 2–5 working days.
Small-batch serial production generally takes 2–4 weeks.
Send us your design drawings and specifications, and we will provide you with an accurate quotation together with a definitive delivery schedule.
We provide instant online quotes for standard manufacturing services. Simply upload your 2D or 3D files and select your preferred process, material, finish, and quantity. If your project is more complex, a dedicated engineer will reach out within one business day to review your requirements and prepare a customized proposal.
Yes, we accommodate engineering change requests wherever possible. Minor adjustments during the prototyping stage are generally straightforward, while changes during mass production may affect cost and lead time. Our team will provide a clear impact assessment and assist you in implementing changes with minimal disruption.
We support common 2D and 3D formats, including STEP, STL, IGES, X_T, DWG, and PDF. For best results, please upload complete, dimensioned drawings and specify critical tolerances, surface finishes, and material preferences in your notes.
For prototyping and low-volume orders, we offer no MOQ so you can order as few as one part. For injection molding and large-scale production, MOQ depends on the tooling and process—our team will provide a detailed breakdown during quoting.
We are ISO 9001:2015 certified and comply with industry-specific standards such as IATF 16949 (automotive) etc. We can also provide material certifications, FAIRs, and third-party inspection reports upon request.