Super-Ingenuity (SPI)

CNC Machining & Injection Molding — DFM/Moldflow Support, CMM Inspection, Prototype to Production Solutions.

ISO 9001 & IATF 16949 CERTIFIED
24h Quote · Free DFM/Moldflow Feedback · CMM Inspection Reports · Global Shipping
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CAD Ready: STEP, IGES, STL supported

ADVANCED MANUFACTURING HUB

HIGH-PRECISION
CNC & INJECTION MOLDING

From prototype to mass production. We deliver down to ±0.002 mm on critical features (CMM verified).
Quality system: ISO 9001 · IATF 16949 workflow.

PRECISION
±0.002mm
Critical Tolerance
(CMM Verified)
SPEED
24h
Quote + DFM
Feedback
QUALITY ASSURANCE
ISO 9001 · IATF 16949
✔ CMM Reports ✔ Material Certs ✔ PPAP Support
ISO 9001 Certified
IATF 16949 Certified

CHINA CNC MACHINING SERVICES · DONGGUAN

Precision CNC Machining & Mold Manufacturing Partner in China

We provide precision CNC machining and export mold manufacturing in Dongguan, China for aerospace, robotics, medical and EV teams. From prototype to mass production, we deliver stable quality with CPK ≥ 1.67, full CMM reports and 3–7 day lead times on critical projects.

Super-Ingenuity (SPI) is a tight-tolerance China CNC machining and mold manufacturing partner specialized in 3-axis, 4-axis and 5-axis machining, Swiss-type turning and export molds for overseas OEMs and Tier-1 suppliers.

  • ±0.002 mm on critical CNC features & mold inserts
  • 3–7 day lead time for CNC prototypes & rapid tooling
  • ISO 9001 & IATF 16949 certified China CNC machining partner

One-stop manufacturing in Dongguan – CNC machining · injection molding · 3D printing · sheet metal – coordinated by a single team to reduce risk and shorten development cycles.

Supported formats: STEP / STP / IGES / SLDPRT / PDF drawings · Direct review by our CNC & mold engineers.

WHY CHOOSE SPI

Why engineers choose SPI for precision CNC machining and export molds in China

Engineers looking for a reliable China CNC machining and injection mold manufacturing partner choose Super-Ingenuity (SPI) to reduce project risk, maintain stable tolerances and move from prototype to production faster.

Consistent tight-tolerance machining

We design process windows and fixturing specifically for high-precision components so critical dimensions stay within tolerance across the entire batch. Typical capability covers stable precision for assemblies and inserts without needing repeated adjustments.

From prototypes to stable mass production

The same engineering team handling your RFQ supports first articles, pilot runs and serial production, reducing scale-up risk. Fast iteration for prototypes, with documented capability data available for FAI / PPAP.

Clear engineering communication

You speak directly with engineers who understand CNC machining and mold manufacturing, ensuring realistic feedback on tolerances, draft, wall thickness and tooling before committing budget. English & Japanese support available.

Free DFM & Quote Icon

Get Free DFM & 24h Quote

Upload STEP / STP / IGES for engineering review. Start your free DFM →

Tolerance Icon

Check Supported Tolerances

High-accuracy CNC machining for tight-tolerance housings, brackets and inserts.

Materials Icon

See Supported Materials

Aluminum · stainless steel · titanium · engineering plastics.

ISO Certification Icon

View ISO & Quality System

ISO 9001 · IATF 16949 · documented process control.

Manufacturing & tooling services

Core Precision CNC & Mold Manufacturing Services

One coordinated team in Dongguan supporting export molds, rapid tooling, precision CNC machining, Swiss-type turning, 3D printing, vacuum casting, sheet metal fabrication and sand casting — from quick-turn prototypes to stable mass production.

Injection molding machine Core Service

Injection molding services

Custom plastic injection molding for consumer, industrial and medical applications.

Production-grade plastic parts with resins and finishes matched to your end-use.

  • ABS, PC, PP, POM & engineering plastics.
  • Prototype to mass production.
  • Overmolding & insert molding.
Export molds Core Service

Export mold production

Long-life tools built in China, validated and shipped overseas.

DME / HASCO standards designed around your press and lifetime targets.

  • DME, HASCO, MISUMI standards.
  • P20, H13, 1.2343 tool steels.
  • T0 / T1 samples & reports.
Rapid tooling Rapid tooling

Rapid tooling services

Cost-effective aluminum/soft-steel tooling for pilot runs (1k–50k shots).

Plastic models Model & display

Plastic model molds

Show-quality models for exhibitions and demos that look like final production.

Vacuum casting Vacuum casting

Vacuum casting

10–100 production-like polyurethane parts without hard tooling commitment.

CNC machining CNC machining

Precision CNC machining

Tight-tolerance 3- & 5-axis milling for aerospace and medical parts.

Swiss turning Swiss turning

Swiss / automatic lathe

High-precision turning for small, slender parts (Ø1–32 mm).

3D printing 3D printing

3D printing services

SLA/SLS additive manufacturing for rapid prototypes and complex geometries.

Sheet metal Sheet metal

Sheet metal fabrication

Laser cutting, bending, and welding for enclosures and brackets.

Sand casting Sand casting

Sand casting services

Robust metal castings for structural and heavy-duty industrial parts.

Risk control · Quality assurance

How SPI reduces CNC & mold manufacturing risk vs. typical job shops in China

For buyers and engineers worried about China CNC machining quality risk or supplier risk, SPI combines SPC/CPK, documented processes and engineer-to-engineer communication to make projects more predictable.

Quality control

Measured quality, not just final inspection

SPI approach

SPC and CPK on key dimensions, CMM reports, traceable inspection plans and GR&R where required.

Typical job shop

Basic caliper checks at final stage, limited sampling, minimal documentation and no ongoing process capability data.

Communication

Engineer-to-engineer review of your parts

SPI approach

Manufacturing engineers join RFQ and DFM review calls, clarifying tolerances, datum schemes and critical faces directly with your team.

Typical job shop

Sales passes drawings to the workshop with limited context, increasing risk of misinterpreted tolerances or unfinished requirements.

Documentation & traceability

FAI, PPAP and complete build history

SPI approach

Structured FAI, PPAP and lot traceability for CNC parts and export molds, including material certs, measurement reports and change logs.

Typical job shop

Basic outbound inspection only; limited records if issues appear in the field, making root-cause analysis difficult.

Typical projects at a glance

Aerospace · 3D printing & machining

Lightweight aerospace bracket with hybrid 3D printing + CNC finishing

Topology-optimized bracket produced with metal 3D printing and tight-tolerance machining on critical mounting faces.

View aerospace case

Automotive · CNC machining

EV drivetrain and fixture parts for European OEM suppliers

Batch CNC machining of housings, shafts and fixtures with CPK-controlled dimensions for long-term production.

View automotive case

Medical · molding

Medical molding project with validated tooling and documentation

Precision plastic components supported by mold validation, measurement reports and material traceability for audits.

View medical molding case
How we work

How our precision CNC machining & mold projects run — from RFQ to shipment in 4 clear steps

Upload your CAD files once — we handle DFM, quoting, prototyping and mass production for precision CNC machining & mold manufacturing projects in China.

1
Upload CAD / PDF
2
Quote in 24h
3
Prototype + CMM
4
Stable production

1. Upload CAD / PDF for free DFM review

Send your STEP, STP, IGES, SLDPRT or PDF drawings via our RFQ / contact form. You can also upload files through our Free DFM & Moldflow request form. Our engineers review manufacturability, tolerances, materials and risk points before we cut any metal.

What it means for you: fewer back-and-forth emails, fewer surprises, and a lower chance of redesign or scrap later in the project.

Free DFM review

2. Get pricing & lead time within 24 hours

Receive a clear quotation with unit price, tooling cost (if needed), suggested process route and realistic lead time based on your quantities and shipping destination.

What it means for you: you can compare options, secure budget and plan your build schedule early, with no hidden costs later.

Quote within 24h

3. Prototype with full CMM inspection

We produce prototypes or small batches and provide CMM / inspection reports on critical dimensions so your team can validate fit, function and key tolerances before ramp-up.

What it means for you: data-backed approval of parts, fewer on-site visits and fewer iterations when you move to pilot builds.

CMM report included

4. Scale to mass production with SPC / CPK ≥ 1.67

After you approve samples, we lock tools, fixtures and CNC programs, then run mass production with SPC monitoring and CPK ≥ 1.67 on key features.

What it means for you: stable quality, fewer line stops and less rework risk over the lifetime of your CNC or mold program.

SPC / CPK ready
Start your RFQ / Upload files

All RFQs are reviewed by engineers · STEP · STP · IGES · SLDPRT · PDF supported · For typical lead times and shipping methods, see our Shipping FAQ.

How to start a precision CNC machining project with SPI

  1. Upload your CAD files (STEP, STP, IGES, SLDPRT) and PDF drawings through our RFQ form.
  2. Receive pricing, suggested process route and lead time within about 24 hours.
  3. Approve prototypes with full CMM reports on critical dimensions.
  4. Confirm schedule and ramp into SPC-controlled production with CPK ≥ 1.67.

How do I get a CNC machining quote in China?

To get a CNC machining quote in China, send your 3D CAD files (STEP, STP, IGES, SLDPRT) and 2D drawings with material, quantity, tolerances, surface finish and any quality requirements. Our engineers review manufacturability, choose the right process and return pricing and lead time, usually within 24 hours. You can also submit RFQs through our Free DFM & Moldflow request form.

Real-world manufacturing scenarios

When SPI is a good fit for your CNC & mold manufacturing projects

Most of our precision CNC machining and mold manufacturing work sits between “one-off prototypes” and “full automotive volume”. We are a strong fit for high-mix, tight-tolerance and export programs — and usually not the best choice for ultra-high-volume, pure cost-driven commodity parts.

High-mix / low-volume CNC machining & mold production

Frequent design changes · 1–500 pcs per lot

We are a strong fit for high-mix, low-volume CNC machining & mold production in China where designs change frequently and typical lots range from 1–500 pcs. You can update drawings without restarting the entire supplier onboarding process.

Example: robotic vision-sensor housing in 7075 aluminum, ~50 pcs per batch, revised every 2–3 runs.

  • When you need multiple variants or fast ECOs, we adapt programs and fixturing instead of re-quoting from zero.
  • Stable quality from 1–5 pcs prototypes up to 50–500 pcs production runs.
  • Consistent anodizing and cosmetic finish across repeated orders and design revisions.
  • SPC / CPK-ready processes for recurring programs with regular shipments.

Not a great fit if you only buy millions of identical, low-mix parts where the lowest possible unit price is the only priority.

Learn more about our high-mix / low-volume capability →

Prototype-to-production transfer for CNC & molding

Same behavior from samples to serial runs

We specialise in prototype-to-production transfer for CNC machining and molds when you have proven a design with small batches or rapid tools and need a controlled ramp to stable production without new dimensional or cosmetic issues appearing later.

Example: EV battery cooling plate in 6061, from 20 pcs prototype lots to ~2,000 pcs per year.

  • We lock cutting strategy, tools and fixtures once the prototype is approved, so behavior stays consistent.
  • CMM / FAI at prototype and pilot stages gives your quality team data to sign off against.
  • SPC / CPK monitoring on critical dimensions during ramp-up reduces the risk of line stops.
  • Documented process sheets and inspection plans for repeat orders and export programs.

Less suitable if you only need a one-time prototype and plan to move volume tooling entirely to another supplier.

See how we handle prototype-to-production transfer →

DFM for tight-tolerance CNC & molded parts

Preventing issues before machining starts

We are particularly useful when DFM for tight-tolerance CNC & molded parts is critical — for example where flatness, true position or surface finish directly affect assembly, sealing or field reliability.

Example: thin-wall 7075 bracket with ±0.02 mm flatness over 150 mm, or medical stainless-steel part with Ra ≤ 0.4 μm requirement.

  • We flag thin-wall deformation, chatter risk and clamping issues at RFQ stage.
  • Tool reach, step-down and rigidity checks reduce trial-and-error on the machine.
  • Support on datum schemes, true position and concentricity strategy to keep CPK in control.
  • Surface finish and coating (anodizing / plating) compatibility checked against your drawing.

Not ideal for very coarse-tolerance, purely cosmetic parts where a low-cost job shop without DFM is enough.

See more DFM tips in our CNC design guidelines →
SPI precision CNC machining and mold manufacturing factory in Dongguan, China Factory tour · 40s Watch how SPI runs precision CNC & molds

About SPI · Company in numbers

A stable precision CNC machining & mold manufacturing partner in Dongguan, China

Super-Ingenuity (SPI) supports overseas OEM and Tier-1 suppliers with precision CNC machining, export injection molds and rapid tooling from our factory in Dongguan, China. One integrated team handles prototypes, pilot runs and recurring production with ISO-driven quality control and full CMM inspection.

Whether you are scaling a new aerospace bracket, MedTech device or robotic platform, our engineers help you choose the right materials, tolerances and processes so each shipment arrives on spec — not just the first sample lot.

View company profile & facilities
Experience
20+
Years of precision CNC machining & mold manufacturing for overseas customers.
Engineering team
50+
Engineers & technicians across CNC, molding, quality and project management.
Global customers
300+
From startups to Tier-1 suppliers in Europe, North America, Japan and Southeast Asia.
Parts per year
1M+
Proven capacity for recurring production programs, not only prototypes or trial batches.
Meet our engineering team

Meet our engineering & quality leaders behind your CNC & molding projects

Behind every RFQ, DFM report and CMM inspection is a cross-functional team of CNC process engineers, mold designers, QC managers and project coordinators — each with 8–20+ years of experience in export programs. They work directly with your engineering and purchasing teams to keep tolerance, cost and lead time in balance.

Rayman

General Manager

20+ years coordinating CNC machining, mold fabrication and international customer programs, with a focus on aerospace structures and robotics components.

Has led more than 200 export CNC and molding programs, balancing tolerance, cost and schedule for complex multi-process builds.
View full profile

Feng Li

Senior CNC Engineer

12+ years in 3- and 5-axis machining, fixture design and process optimization for aluminum, stainless steel and tool steel components.

Helps customers stabilize thin-wall housings, brackets and frames into repeatable machining processes across 150+ projects.
View full profile

Chen Rui

QC Manager

10+ years in CMM programming, SPC / CPK and PPAP for CNC and molding programs, turning inspection data into actionable feedback for both SPI and customer quality teams.

Supports aerospace, robotics and EV customers with CPK ≥ 1.67 on critical features and structured problem-solving.
View full profile

Li Wei

Tooling & Mold Engineer

8+ years in rapid tooling, export molds and molding validation for automotive, EV and medical plastic components, focusing on gating, cooling and steel selection.

Has helped shorten T0–T1–T2 cycles and reduce tool revisions for dozens of export mold programs.
View full profile
Learn more about our company & history
Global footprint & quality assurance

Certified quality, global customers and focused industries

We combine ISO 9001 and IATF 16949 certified CNC manufacturing with practical experience in demanding industries — supplying OEMs and Tier-1 / Tier-2 suppliers in Europe, North America, Japan and Southeast Asia.

Certifications & compliance

ISO 9001 IATF 16949 ISO 13485 RoHS / REACH
Standard Typical scope Documentation
ISO 9001 General CNC machining, mold manufacturing and inspection processes. Certificates, process overview and quality manual on request.
IATF 16949 Automotive & EV-related precision components and tooling. PPAP, control plans, flow and capability data for qualified projects.
ISO 13485 Selected medical device components and assemblies. Validation records, traceability documents and inspection plans.
RoHS / REACH Materials, coatings and plating for export programs. Material declarations and test reports when required.

Copies of certificates and project-level whitepapers are available upon request.

Capabilities & specifications

Core CNC machining & mold manufacturing envelope for precision components

This is our core CNC machining and mold manufacturing envelope for precision metal and plastic components. It covers 3- and 5-axis machining, turning, Swiss-type automatic lathes, grinding and EDM in one facility in Dongguan, China, and is designed as a quick-reference guide for buyers and design engineers.

Precision CNC machined aluminum components with complex geometries CNC aluminum parts
SPI operator performing on-machine CMM inspection On-machine inspection
Overview of SPI Dongguan CNC machining floor and envelope Machining envelope
High precision mold inserts and custom tooling components Mold inserts

Machining envelope & tolerances

Core CNC machining ranges for 3-axis, 5-axis, turn-mill and Swiss-type turning.

Envelope & accuracy
ProcessEnvelope / capability
3-axis CNC machiningUp to approx. 1200 × 800 × 500 mm for general prismatic parts, plates and bases.
5-axis CNC machiningUp to approx. 750 × 750 × 500 mm for complex housings, brackets and impeller-type parts.
Turn-mill centersTurning up to about Ø450 mm with milling on the same setup for flanges, hubs and shafts.
Swiss-type turningØ1–32 mm precision components such as pins, bushings and connector parts.
CNC tolerance (standard)Typically ±0.01 mm on machined features for metals and engineering plastics.
Precision featuresGrinding down to approx. ±0.002 mm; EDM features to approx. ±0.005 mm on critical areas.

Typical CNC part combinations

  • Large 3-axis base plates with tight flatness and hole position tolerances.
  • 5-axis machined brackets with multi-side features and precise datums.
  • Turn-mill flanges and shafts with concentricity and run-out control.

Engineering materials

Metals and plastics for CNC machining, mold tooling and injection-molded parts.

Metals & plastics
CategoryTypical grades / examples
Aluminum6061, 6082, 7075, plus 1100 / 2024 / 5052 / 5083 and other common alloys.
Stainless steels303, 304, 316, 17-4PH and selected 400-series grades for shafts and wear parts.
Carbon & tool steelsAISI 1010–1045, P20, 1.2738, D2, H13 and similar mold and tool steels.
TitaniumGrade 1–4 and Ti-6Al-4V for lightweight, high-strength components.
Engineering plasticsABS, PC, PC+ABS, POM, PEEK, PA6/PA66, PMMA, PBT, PVC and other engineering plastics.
Brass & copper alloysInserts, electrical contacts, fittings and thermal management components.

Major industries served

Precision CNC machining & mold manufacturing for demanding applications

We support OEMs and Tier-1 / Tier-2 suppliers in aerospace, medical, automotive and robotics with tight-tolerance machined parts and mold components.

Super-Ingenuity production team working on precision tooling and mold components

Aerospace Industry

High-precision aerospace brackets, sensor housings and lightweight structural components with full CMM inspection. Typical parts: brackets, housings, fixtures and ground-support tooling.

Medical Device Industry

Surgical tools, medical housings, lab equipment parts and complex stainless-steel or titanium components. Typical parts: instrument handles, diagnostic device housings and fluid-handling components.

Automotive Industry

Inserts, powertrain machining, EV cooling components and high-precision fixtures for OEM and Tier-1 programs. Typical parts: connector housings, brackets, cooling plates and checking fixtures.

Robotics CNC Machining

Precision CNC parts for robotics and automation systems: sensor mounts, end-effectors, brackets and vision-system housings. Typical parts: robot arm joints, end-effectors, camera brackets and sensor mounts.

Not sure if your project fits? Upload your CAD files — we’ll review manufacturability within 24 hours.

Customer feedback

What Engineers & Buyers Say

Feedback from teams who rely on Super-Ingenuity for tight-tolerance CNC machining, export molds and rapid prototyping. (Shared with permission or anonymized due to NDAs.)

“We had 7075-T6 parts with ±0.01 mm tolerances and SPI got them right on the first run. Surface finish wasn’t perfect at first, but they reworked it quickly and didn’t charge extra — that follow-through matters.”

“Lead times are usually spot on. One order came late due to customs, but they kept us updated the whole time. Parts passed QC without issues — communication is their strong suit.”

“We needed prototypes in four working days. They optimized our STL files, suggested SLS over FDM, and shipped with a day to spare. The technical back-and-forth was better than other vendors.”

“Very solid supplier for CNC aluminum parts. We’d like to see more post-processing options for plastics, but overall communication, DFM support and tolerance consistency have been great.”

“We’ve worked with SPI across five product lines. They manage tight tolerances and help reduce cost where it makes sense. Not the cheapest option, but a partner we can trust.”

Our production capabilities

Custom machined parts & tooling — services overview

One facility for CNC machining, export molds, rapid tooling, injection molding and supporting processes — ideal for prototypes, bridge tooling and recurring production.

Tip: Each card includes a scan-friendly “Key specs” line so buyers can confirm fit fast (envelope, tonnage, diameter range, etc.).

M
Molding

Export Mold Production

DME / HASCO / MISUMI standard export molds with fast sampling and stable tool life planning.

Key specs: export standards · steel selection & cooling · sampling & validation.
Explore molds
IM
Molding

Injection Molding

Engineering plastics for pilot runs and low-to-mid volume molded parts.

Key specs: 80T–350T presses · pilot → serial support · QC documentation.
Explore molding
RT
Prototype

Rapid Tooling

Bridge 3D printing and full steel molds with fast aluminum / soft-steel tools.

Key specs: fast T0/T1 cycles · design iterations · controlled ramp-up.
Explore rapid tooling
LV
Prototype

Low-Volume Manufacturing

From 1–5 pcs prototypes to 50–500 pcs recurring lots with repeatable quality.

Key specs: high-mix programs · ECO-friendly · CPK-controlled options.
Explore low-volume
CNC
CNC

Precision CNC Machining

3- & 5-axis CNC for aluminum, stainless steel, titanium and tool steels.

Key specs: envelope up to 1200×800×500 mm · typical ±0.01 mm.
Explore CNC
SW
CNC

Swiss Lathe Turning

Swiss-type turning for pins, bushings, shafts, fasteners and connector parts.

Key specs: Ø1–32 mm · long-run stability · post-grinding available.
Explore Swiss turning
3D
Prototype

Plastic Models & 3D Printing

SLA / SLS / FDM prototypes for design reviews, assembly checks and early testing.

Key specs: fast lead time · file optimization support · prototype iteration.
Explore 3D printing
SC
Fabrication

Sand Casting

Aluminum & iron castings with CNC finish machining for bases and housings.

Key specs: near-net shape · CNC finishing · suitable for larger structures.
Explore casting
SM
Fabrication

Sheet Metal Fabrication

Laser cutting, bending and welding for brackets, enclosures and machine guards.

Key specs: laser + bending + coating · enclosure builds · fast turnaround.
Explore sheet metal