Since 1995 · Drawing-Based OEM Metal Components · MIM · PM · Gears · Machining Support

Custom MIM and powder metallurgy parts, engineered from your drawing.

Custom metal components for OEM programs, made to your drawing. We review MIM, powder metallurgy, gears and secondary machining against your geometry, material, quantity and critical requirements.

Submit Your Drawing for Review → Explore Capabilities

SINTS factory exterior with company signboard

MIM injection molding hall at the SINTS Zhongshan plant

Vacuum sintering furnace line at the SINTS Zhongshan plant

Coordinate measuring machine in the SINTS inspection lab

CNC machining workshop for post-sinter finishing

Zhongshan · Principal SiteISO9001 & IATF16949

1995Manufacturing Since

45,000 m²Combined Manufacturing Area

32Injection Machines · 50T–400T

IATF16949Zhongshan PM scope

Drawing

DFM & Process Review

MIM

Complex 3D Parts

Gears & Structural Parts

Gears

Transmission Components

Quality

Program-Specific Control

Product categories

Explore products by application

Browse real product examples for familiar applications, or start with a custom OEM drawing.

Coffee Machines & Home Appliances

Grinder burrs, portafilter hardware and appliance mechanisms

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Consumer Electronics

Buttons, communication-device parts, watch and camera hardware

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Gears & Transmission

Spur, helical and bevel gears, plus supporting bushings

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Locks & Security

Spring bolts, deadbolts, cylinder parts and smart-lock hardware

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Medical Devices

Forceps, tweezer and instrument component examples

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Power Tools & Industrial Hardware

Tool gears, pneumatic forks, guide components and hardware

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Custom OEM Metal Components

Agricultural, personal-care and drawing-specific metal parts

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Manufacturing Capabilities

Manufacturing capabilities from tooling to finished parts

MIM, PM, gear manufacturing, machining, tooling strategy and quality planning are different parts of one decision. The right combination depends on geometry, material, annual volume, critical interfaces and functional risk.

Metal Injection Molding

For small, complex 3D metal parts where geometry consolidation and repeatable production volume can justify tooling.

MIM · Complex Geometry · Production Volume

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Powder Metallurgy

For gears, bushings and structural components that suit compaction geometry and repeat-volume economics.

PM · Gears · Bushings · Structural Parts

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CNC & Secondary Machining

For low-volume parts, machining-led designs, or critical features that require post-sinter finishing.

Turning · Milling · Grinding · Critical Features

Gears & Motion Components

Process selection for gears, pinions, cams, sprockets and related motion parts using PM, MIM and secondary operations as appropriate.

Spur · Bevel · Pinion · Cam · Sprocket

Tooling & DFM

Early review of parting, wall thickness, draft, shrinkage, datums, tolerances and secondary-operation strategy before tooling is fixed.

Drawing Review · DFM · Tooling

Quality & Validation

Dimensional, hardness, density and metallographic checks with project-specific first-article and production documentation.

CMM · FAI · PPAP When Required

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Who We Are

A manufacturer for functional metal components

From gears and bushings to bolts, hinges and compact mechanisms, SINTS produces metal components to customer drawings. Engineering support covers tooling, forming, secondary operations and inspection.

SINTS manufacturing facility in Zhongshan, Guangdong

The Zhongshan and Jiangxi production bases provide about 45,000 m² of combined manufacturing area. For new programs, the engineering discussion starts with part function, geometry, material, critical datums, load or wear conditions, annual demand and the surfaces that may need secondary control.

Manufacturing since 1995 · powder-metallurgy foundation with MIM capability for suitable complex parts
About 45,000 m² combined manufacturing area · Zhongshan + Jiangxi production bases
32 injection machines · 50T–400T listed in current company capability information
ISO9001 & IATF16949 · certified Zhongshan powder-metallurgy manufacturing scope

More About SINTS

Our Factory

Real equipment, real parts, two-site manufacturing support

Real equipment, real parts, and manufacturing resources across Zhongshan and Jiangxi — with Zhongshan as the principal SINTS site for PM, MIM and inspection.

Engineering Case Notes

See how we evaluate process fit before quoting

Three practical examples show where MIM or PM may help — and where critical dimensions, validation or low volume can keep CNC in the process plan.

SINTS lock component reference for manufacturing-route evaluation

Engineering Note · CNC / MIM Evaluation

Smart Lock Cam — CNC vs MIM Process Evaluation

How complex profile, repeat volume and selective finishing can make a CNC-to-MIM evaluation worthwhile.

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SINTS stainless precision component reference for instrument applications

Engineering Note · 316L MIM Evaluation

316L Instrument Jaw — MIM Process Evaluation

How serrations, undercuts, surface condition and inspection requirements affect a 316L MIM evaluation.

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SINTS powder metallurgy gear reference for load and wear applications

Engineering Note · PM Gear Evaluation

Power Tool Gear — PM & Sinter-Hardening Evaluation

How density, tooth loading, hardness and secondary operations shape a PM gear process decision.

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All Case Notes

Buyer Guides & Blog

Practical guides for engineers and buyers

Practical guides for engineers and procurement managers evaluating MIM and PM parts.

Process Guide

What Is Metal Injection Molding for Small Precision Parts?

How molding, debinding and sintering turn metal feedstock into complex components.

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SINTS compacting and pressing equipment for powder metal components

Sourcing Guide

How to Choose the Right Manufacturing Route for Small Metal Parts

A practical decision framework for engineers comparing MIM, PM, stamping, and CNC for a new project.

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RFQ Guide

What to Include in a Custom Metal Parts RFQ

The information a manufacturer needs to give you an accurate quote — and what missing details cost you.

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Process Fit

A faster way to assess process fit

Three practical questions to resolve before comparing unit prices or committing to tooling.

When is MIM a good fit?

MIM may fit small, complex 3D metal parts when geometry consolidation and repeat volume justify tooling. Material, distortion risk, critical datums and secondary finishing still need drawing-level review.

What should be included in an RFQ?

Send a 2D drawing or 3D CAD file with material, annual volume, application, critical dimensions, finish, inspection requirements and target timing whenever available.

Can SINTS support quality documentation?

Yes. Dimensional reports, material confirmation, FAI, PPAP and other quality documentation can be planned when required by the drawing or customer program.

RFQ Process

From drawing review to repeat supply in four stages

Each stage is defined by the drawing, tooling route and customer approval requirements rather than by a universal lead-time promise.

Submit Drawing

Send the drawing or CAD file with material, annual volume, application context and critical requirements.

Engineering Review

Engineering reviews process fit, manufacturability, tooling assumptions, secondary operations and missing functional information.

Sample & Report

Trial timing, dimensional inspection and customer-required approval documentation are confirmed with the project plan.

Production Supply

Repeat production follows the approved route, quality controls, packaging and shipment requirements agreed for the program.

Start with the drawing and the function

Use this short form for an initial project review, or open the full RFQ page if you want to provide more material, tolerance, volume and process information.

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Zhongshan, Guangdong, China

Principal SINTS manufacturing site. ISO 9001 covers the Zhongshan quality management system; IATF 16949:2016 applies to the certified Zhongshan powder-metallurgy manufacturing scope.

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International Sales Team

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Factory Visits

In-person factory visits and project-specific remote review can be coordinated with the sales team.

ISO9001 & IATF16949 RoHS / REACH documentation

Custom MIM and powder metallurgy parts, engineered from your drawing.

Explore products by application

Coffee Machines & Home Appliances

Consumer Electronics

Gears & Transmission

Locks & Security

Medical Devices

Power Tools & Industrial Hardware

Custom OEM Metal Components

Manufacturing capabilities from tooling to finished parts

Metal Injection Molding

Powder Metallurgy

CNC & Secondary Machining

Gears & Motion Components

Tooling & DFM

Quality & Validation

A manufacturer for functional metal components

Real equipment, real parts, two-site manufacturing support

See how we evaluate process fit before quoting

Smart Lock Cam — CNC vs MIM Process Evaluation

316L Instrument Jaw — MIM Process Evaluation

Power Tool Gear — PM & Sinter-Hardening Evaluation

Practical guides for engineers and buyers

What Is Metal Injection Molding for Small Precision Parts?

How to Choose the Right Manufacturing Route for Small Metal Parts

What to Include in a Custom Metal Parts RFQ

A faster way to assess process fit

When is MIM a good fit?

What should be included in an RFQ?

Can SINTS support quality documentation?

From drawing review to repeat supply in four stages

Submit Drawing

Engineering Review

Sample & Report

Production Supply

Ready for a drawing-based process review?

Start with the drawing and the function

Zhongshan, Guangdong, China

International Sales Team

International Sales

International Sales

International Sales

Factory Visits