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Sango Injection Molding
• INJECTION MOLD TOOLING

Injection Mold Tooling, Precision Core and Cavity Manufacturing

Custom prototype aluminum and hardened production steel tooling (P20, H13, NAK80). T1 samples delivered in as fast as two weeks, with cavity tolerances held to ±0.02mm.

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SPI Class 101 to 105 Tooling
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ISO 9001:2015 Certified
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1,000,000+ Shot Guarantee on Production Tooling

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Upload your CAD file for instant pricing and DFM feedback.

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Huawei Technologies
Samsung Electronics
Tata Motors
Delta Electronics
Lens Technology
Eveready Industries
Beijing Institute of Technology
Ansell LTD
NRTC
Chantelle
PT Wings Surya
PT Sun Paper Source
PT Supreme Paper Solution
Huawei Technologies
Samsung Electronics
Tata Motors
Delta Electronics
Lens Technology
Eveready Industries
Beijing Institute of Technology
Ansell LTD
NRTC
Chantelle
PT Wings Surya
PT Sun Paper Source
PT Supreme Paper Solution

Injection Molding
for Various Industries

From automotive interiors to medical device housings, SANGO molds parts to the tolerances and material specs each industry actually requires — not a one-size-fits-all process.

Injection Molding Quality Control

Quality gets built in at mold design, not inspected in at the end. Cross-team DFM reviews and in-process controls hold first-pass yield at 90% or better across every production run.
⬡Mold & Pre-Production InspectionMold flow simulation and pre-production checks catch defects before steel is cut. Engineers optimize gate location, material flow, and cooling layout for consistent fill on every cavity.
◎In Process Quality ControlInjection speed, pack pressure, and melt temperature are logged shot by shot and held within validated process windows, so part 10,000 matches part one.
→Final InspectionEvery batch is measured against your drawing with CMM and colorimeter data before it ships — dimensions to ±0.02 mm, cosmetics, and functional fit all included in the report.
Image (Engineer reviewing CNC machining design plans)
Image (Precision CNC milling operation)
Image (CNC machine manufacturing metal part)

Frequently Asked Questions

Injection Molding Blueprint & CAD Review
What makes Sango different from other manufacturing platforms or intermediaries?

We run injection molding directly - our own process engineers review your design, our own tooling shop builds and maintains the mold, and our own press floor runs production. There's no broker relaying files between you and a third-party shop, which means design feedback, DFM changes, and quality issues get resolved in one conversation instead of passing through a middleman.

How fast can Sango deliver?
What surface finishes and colors are available?

Material Options for
Injection Mold Tooling, Precision Core and Cavity Manufacturing

Explore Products
Commodity Plastics

Commodity Plastics

Acrylonitrile Butadiene Styrene (ABS)
Polypropylene (PP) & Polyethylene (PE/HDPE/LDPE)
Polystyrene (PS) & High Impact Polystyrene (HIPS)

Surface Finishes & Post-Processing

Finishes mapped directly from CMS.

SPI Mold Finishes

SPI Mold Finishes

SPI GradesSPI-A, SPI-B, SPI-C, SPI-D
Finishing LookHigh Gloss, Semi-Gloss, Matte, Textured
Surface PolishDiamond Polish, Fine Grit, Sandblasted
Custom Textures

Custom Textures

Mold-Tech TexturesStandard MT grain & automotive leather textures
Bead BlastingUniform satin matte & non-glare cosmetic finish
Custom EDM TexturesPrecision spark erosion & bespoke micro-reliefs
Secondary Finishing Services

Secondary Finishing Services

Surface DecorationPad printing, silk screening & laser engraving
Assembly & InsertsUltrasonic welding & heat-stake threaded inserts
Protective CoatingsEMI/RFI shielding, spray painting & UV topcoats
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Plastic Injection Molding Services for Custom Parts

SANGO takes your part from a handful of prototype units to full production runs on the same tooling philosophy, with T1 samples ready in as fast as 2 weeks. Our China-based facilities run 90 to 830-ton presses, so small precision components and large structural housings both stay in-house.

Precision mold tooling, overmolding, and insert molding all run through the same DFM review before steel is cut, so bond compatibility and wall thickness are checked once rather than per process. One partner across design, tooling, and production means fewer handoffs, tighter part consistency, and a clearer path to scaling volume.

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How Does SANGO Injection Mold Tooling, Precision Core and Cavity Manufacturing
Process Work

At SANGO, we make custom services simple and efficient.

Upload CAD file

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Start by choosing your preferred manufacturing process, then upload your design file.

Upload CAD file

Get a Quote

/02

Select materials, surface finishes, and shipping options. Receive an online injection molding quote and manufacturability feedback in one day.

Get a Quote

Review T1 Sample

/03

We produce a T1 sample for your approve. Check every detail to match your specifications. This step usually takes two weeks.

Review T1 Sample

Production Begins

/04

After approving the sample, we move to full-scale production, maintaining high standards of quality and precision.

Production Begins

Delivery

/05

We ship your custom injection molded parts from our China injection molding facilities to your location, ready for immediate use.

Delivery

Ready to Start

/06

Start your injection molding project with SANGO. Experience efficiency like never before!

Ready to Start
Global Injection Molding Manufacturing Network Map

Injection Molding Manufacturing Network

SANGO injection molding network combines 50 advanced machines capable of 90 to 830 tons with experienced project managers to handle projects of any size or complexity. We produce plastic molded prototypes and production parts with global shipping from China’s injection molding supplier.
50+Machines Set
120+Countries & Regions Served
20k+Customers Worldwide

Injection Molding Capabilities

Our injection molding services cover every stage, from design to delivery. We produce prototypes and large-scale parts with tight tolerances, certified quality, and quick lead times for global customers.
Image (Digital caliper measuring a precision machined part)
Maximum Part Size1200×1000×500 mm
StandardsDescription
Minimum Part Size5×5×5 mm
Part to Part Repeatability+/- 0.1 mm
Mold CavitiesSingle-cavity, multi-cavity, family molds
Available Mold TypesSteel and aluminum — <1K / 5K / 30K / 100K+ uses
Mold Cavity Tolerances+/- 0.02 mm
Secondary OperationsTexturing, pad printing, laser engraving, inserts, assembly
UndercutsY-type, L-type
Wall Thickness0.5 mm to 5 mm
Draft0.5° to 2°
Ribs / Gussets0.5 mm to 3 mm thick
BossesDiameter 3 mm to 10 mm
Lead TimeWithin 15 working days

Applications of Injection Molding

SANGO’s injection molding infrastructure supports high-precision component production across automotive, medical devices, consumer electronics, and industrial equipment. From rapid prototype tooling to high-volume production runs, our validated press controls maintain strict dimensional tolerances and consistent part-to-part repeatability.

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Advantages of Injection MoldingHigh-volume, consistent productionHigh-volume, consistent productionHigh-volume, consistent productionHigh-volume, consistent production
Disadvantages of Injection MoldingHigh upfront tooling costsDesign limitationsLonger lead timesNot cost-effective for low-volume runs