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

Custom MIM, PM & Precision Metal Parts

SINTS manufactures custom metal components for appliances, electronics, locks, medical instruments, gears and industrial equipment. Since 1995, our powder-metallurgy foundation has grown to include MIM and supporting machining. Start with your part; we will review the practical route to production.

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1995Manufacturing Since
45,000 m²Combined Manufacturing Area
32Injection Machines · 50T–400T
IATF 16949Zhongshan PM Scope
Drawing
DFM & Process Review
MIM
Complex 3D Parts
PM
Gears & Structural Parts
Gears
Transmission Components
Quality
Program-Specific Control
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
  • IATF 16949:2016 · certified Zhongshan powder-metallurgy manufacturing scope
More About SINTS
Product categories

Explore products by application

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

Coffee Machines & Home Appliances

Coffee Machines & Home Appliances

Grinder burrs, portafilter hardware and appliance mechanisms

View examples →
Consumer Electronics

Consumer Electronics

Buttons, communication-device parts, watch and camera hardware

View examples →
Gears & Transmission

Gears & Transmission

Spur, helical and bevel gears, plus supporting bushings

View examples →
Locks & Security

Locks & Security

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

View examples →
Medical Devices

Medical Devices

Forceps, tweezer and instrument component examples

View examples →
Power Tools & Industrial Hardware

Power Tools & Industrial Hardware

Tool gears, pneumatic forks, guide components and hardware

View examples →
Custom OEM Metal Components

Custom OEM Metal Components

Agricultural, personal-care and drawing-specific metal parts

View examples →
Open the Product Library →
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.

01

Metal Injection Molding

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

MIM · Complex Geometry · Production Volume
02

Powder Metallurgy

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

PM · Gears · Bushings · Structural Parts
03

CNC & Secondary Machining

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

Turning · Milling · Grinding · Critical Features
04

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
05

Tooling & DFM

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

Drawing Review · DFM · Tooling
06

Quality & Validation

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

CMM · FAI · PPAP When Required
Explore Manufacturing Capabilities →
Engineering Resources

Technical information for your next project

Compare manufacturing options, review material references and understand inspection requirements before requesting a quotation.

Process

Manufacturing Capabilities

Compare where MIM, PM, gear manufacturing, machining and hybrid routes may fit, including geometry limits, secondary operations and drawing-review inputs.

View capability data → Materials

Material Library

Review documented material grades and property references, while specialty materials remain subject to project-specific route and availability confirmation.

Compare grades → Quality

Quality System

Review the certified PM scope, inspection resources, FAI/PPAP support, traceability planning and corrective-action workflow without assuming a fixed documentation package for every program.

See the QC standard → Engineering Notes

Process Evaluation Case Notes

Engineering examples show how geometry, material, tolerances, volume and finishing requirements change the MIM, PM or machining decision.

Read the case notes →
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.

Factory exterior with company signboard
01 Exterior
 Molding press shop floor
02 Molding Shop
 Sintering furnace
03 Sintering
 CNC machining center
04 CNC
 CMM quality inspection
05 Inspection
 Parts showroom
06 Showroom
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.

Read the case →
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.

Read the case →
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.

Read the case →
All Case Notes
Why SINTS

Engineering support through production

Work with a manufacturing team on tooling, samples, inspection and repeat supply.

⚙

Process selection before tooling

PM and MIM are core manufacturing routes, with gear, machining, tooling, inspection and project-specific secondary operations considered when the drawing requires them.

✓

IATF 16949 certified PM scope

The Zhongshan powder-metallurgy manufacturing scope is IATF 16949:2016 certified. FAI, PPAP and other documentation are defined according to the customer program.

★

Two-site manufacturing resources

Zhongshan and Jiangxi provide complementary manufacturing capacity. The exact production site and supporting operations are confirmed during project review.

Buyer Guides & Blog

Practical guides for engineers and buyers

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

SINTS MIM lock component reference
Process Guide

What Is Metal Injection Molding for Small Precision Parts?

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

→
SINTS molding equipment used in metal component production
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.

→
Bevel gear geometry references
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.

Ready for a drawing-based process review?

Send the part geometry, material target, annual volume and critical requirements. We will review the manufacturing route before tooling is proposed.

Send Your Drawings
Contact Us

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.

Optional. Up to 5 files, 12 MB each and 25 MB total.

Send your drawing and requirements to the SINTS team for review.

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Zhongshan, Guangdong, China

Principal SINTS manufacturing site. IATF 16949:2016 certification applies to the Zhongshan powder metallurgy manufacturing scope.

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International Sales Team

International Sales

Andy · andy@sints.cn · +86 138 2229 1317
WhatsApp →

International Sales

Choi · choi@sints.cn · +86 139 3568 6831
WhatsApp →

International Sales

Chris · chris@sints.cn · +86 138 2878 5172
WhatsApp →
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Factory Visits

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

ISO 9001 IATF 16949 RoHS REACH