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

View examples →

Consumer Electronics

Buttons, communication-device parts, watch and camera hardware

View examples →

Gears & Transmission

Spur, helical and bevel gears, plus supporting bushings

View examples →

Locks & Security

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

View examples →

Medical Devices

Forceps, tweezer and instrument component examples

View examples →

Power Tools & Industrial Hardware

Tool gears, pneumatic forks, guide components and hardware

View examples →

Custom OEM Metal Components

Agricultural, personal-care and drawing-specific metal parts

View examples →

Open the Product Library →

Manufacturing routes

Find the route that fits your component

MIM

Small, complex metal geometry

Review molding, sintering and the features that may need finishing.

Read the guide →PM

Gears and structural components

Discuss compaction geometry, material condition and final interfaces.

Read the guide →Gears

Transmission and motion parts

Start with the teeth, mating surfaces, load and acceptance requirements.

Read the guide →

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.

Selected products

A closer look at three custom components

Spur gears

Representative custom geometry. Open the component review and define the requirements for your part.

Review this component →

Smart-lock cylinder parts

Representative custom geometry. Open the component review and define the requirements for your part.

Review this component →

Power-tool gears

Representative custom geometry. Open the component review and define the requirements for your part.

Review this component →

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 →

Representative forceps jaw geometry for the process-evaluation note

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

Buyer guides & blog

New guides for engineers and buyers

PM & Gears

Powder Metallurgy Gears: What to Define Before Requesting a Quote

Define gear geometry, mating interfaces, duty and final condition before comparing a drawing-based quotation.

Read the guide →PM & Gears

Sintered Gear Secondary Operations: Sizing, Machining and Heat Treatment

Review which gear features need sizing, machining or heat treatment, and how the final inspection sequence should follow them.

Read the guide →Process Selection

MIM vs. CNC for Small Complex Metal Parts: A Drawing Review Checklist

Compare MIM and CNC using the same geometry, critical dimensions, material condition, volume and approval requirements.

Read the guide →

Browse all engineering resources →

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.

📍

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.

✉

International Sales Team

🏠

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

Find the route that fits your component

Small, complex metal geometry

Gears and structural components

Transmission and motion parts

A manufacturer for functional metal components

Real equipment, real parts, two-site manufacturing support

A closer look at three custom components

Spur gears

Smart-lock cylinder parts

Power-tool gears

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

New guides for engineers and buyers

Powder Metallurgy Gears: What to Define Before Requesting a Quote

Sintered Gear Secondary Operations: Sizing, Machining and Heat Treatment

MIM vs. CNC for Small Complex Metal Parts: A Drawing Review Checklist

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