Shenzhen Sanpin Medical Precision Injection Molding Co Ltd
Precision Injection Molding For Medical Device Makers

Precision Injection Molding For Medical Device Makers

Tooling and clean room molding for disposable diagnostic and delivery components, built in Shenzhen since 2007 under ISO 13485:2016.

Class 100000 Clean Room Molding Under One Roof

Class 100000 Clean Room Molding Under One Roof

Molds cut to 0.002 mm and parts molded in an ISO 8 clean room, so tooling tolerance survives all the way to the packed carton.

From Mold Design To Validated Volume Production

From Mold Design To Validated Volume Production

Four in-house divisions and 260 people take a medical component from 3D data through tooling, sampling and molded volume without outside subcontracting.

A 16000 Square Metre Molding Plant In Shenzhen

A 16000 Square Metre Molding Plant In Shenzhen

One site holding high precision tooling, large scale mold processing, automated molding and clean room assembly for medical and automotive customers.

What We Make And Who For

A Mold Shop And A Molder In The Same Building

We mold small disposable plastic components for medical devices: luer fittings and stopcocks, reaction cups and specimen containers, blood separation parts, transfer pipettes, syringe and catheter components, and single use surgical handles. We cut the molds for them ourselves.

Who We Serve

IVD instrument makers, disposable device brands, ophthalmic and dental device companies, and contract manufacturers who need a molder that can also build the tool. Our automotive and home appliance divisions serve tier suppliers with the same equipment base.

What Problem We Solve

Most buyers of small medical parts are juggling one supplier for the tool and another for the molding, and losing weeks every time a dimension drifts. We hold the tool, the molding process and the clean room in one plant, so a correction is a machine booking rather than a shipment and a negotiation.

Why Customers Choose Us

In business since 2007, 260 people across four divisions, mold machining accuracy of 0.002 to 0.005 mm, 350 to 400 mold sets built per year, ISO 8 clean room molding, and certification to both ISO 9001:2015 and ISO 13485:2016.

Where We Are

One site in Maozhouhe Industrial Zone, Songgang Street, Baoan District, Shenzhen, holding high precision tooling, large scale mold processing, automated molding and clean room production.

2007Founded
16000 m2Plant Area
260 peopleTeam
0.002-0.005 mmMold Accuracy
350-400 setsMolds Per Year
ISO 8Clean Room
Product Categories

Six Families Of Molded Medical Components

Every category below is tooled and molded here. Follow one through to see the full component list, the problems it solves and the questions buyers ask about it.

Luer Fittings And Connectors
Category

Luer Fittings And Connectors

Molded luer locks, slip adapters, caps and stopcocks that mate reliably with standard syringes and tubing sets.

Browse Category →
Diagnostic Consumables
Category

Diagnostic Consumables

Reaction cups, specimen containers, centrifuge tubes and closures for analysers and laboratory workflows.

Browse Category →
Blood Separation Components
Category

Blood Separation Components

Molded separator bodies, discs and collection parts for blood handling and sample preparation devices.

Browse Category →
Transfer Pipettes And Droppers
Category

Transfer Pipettes And Droppers

Single use pipettes, droppers and graduated transfer parts molded for consistent draw and drop volume.

Browse Category →
Component Catalogue

Components We Mold Every Week

Twenty three molded components across six families, each with its own tooling, sampling record and clean room packing format.

Luer Connectors And Tips molded by Sanpin Medical
Luer Fittings And Connectors

Luer Connectors And Tips

A family of molded luer connectors, clamps and tips for fluid lines in infusion, sampling and instrument plumbing.

View Component →
Luer Lock Caps molded by Sanpin Medical
Luer Fittings And Connectors

Luer Lock Caps

Small molded luer caps and closures that seal an open port between procedures.

View Component →
Female Luer Caps molded by Sanpin Medical
Luer Fittings And Connectors

Female Luer Caps

Female luer closures and seals molded for ports that have to open and close repeatedly without losing their seal.

View Component →
Three Way Stopcock Components molded by Sanpin Medical
Luer Fittings And Connectors

Three Way Stopcock Components

Molded stopcock bodies, handles and caps for three way fluid control on infusion and sampling lines.

View Component →
Colour Coded Luer Connectors molded by Sanpin Medical
Luer Fittings And Connectors

Colour Coded Luer Connectors

Colour coded luer connectors and tee pieces used where a line has to be identified at a glance.

View Component →
Micro Luer Fittings molded by Sanpin Medical
Luer Fittings And Connectors

Micro Luer Fittings

Very small molded fittings and adapters for compact fluidic assemblies where a standard luer body will not physically fit.

View Component →
Luer Slip Adapters molded by Sanpin Medical
Luer Fittings And Connectors

Luer Slip Adapters

Slip fit luer adapters and transition pieces that join a syringe or a line to a component with a different interface.

View Component →
Reaction Cup molded by Sanpin Medical
Diagnostic Consumables

Reaction Cup

Molded reaction cups for automated analysers, where the optical path runs through the wall and a thickness variation reads as a result error.

View Component →
Specimen Containers molded by Sanpin Medical
Diagnostic Consumables

Specimen Containers

Graduated specimen containers with printed scales and biohazard marking, molded for collection and transport of clinical samples.

View Component →
Centrifuge Tubes molded by Sanpin Medical
Diagnostic Consumables

Centrifuge Tubes

Molded centrifuge tubes and closures for sample preparation, where the part has to hold its shape under spin load and still seal afterwards.

View Component →
Sample Tube Assemblies molded by Sanpin Medical
Diagnostic Consumables

Sample Tube Assemblies

Multi part sample tube assemblies combining a tube, an insert and a closure.

View Component →
Vial Caps And Seals molded by Sanpin Medical
Diagnostic Consumables

Vial Caps And Seals

Small molded caps and seals for vials and sample tubes.

View Component →
Blood Separator molded by Sanpin Medical
Blood Separation Components

Blood Separator

Molded blood separator bodies, discs and internals, carried over from the original product catalogue.

View Component →
Blood Collection Components molded by Sanpin Medical
Blood Separation Components

Blood Collection Components

Molded holders, hubs and transfer parts used around blood collection.

View Component →
Transfer Pipettes molded by Sanpin Medical
Transfer Pipettes And Droppers

Transfer Pipettes

Single use transfer pipettes molded for consistent draw and release.

View Component →
Dropper Pipettes molded by Sanpin Medical
Transfer Pipettes And Droppers

Dropper Pipettes

Molded dropper pipettes for controlled drop by drop delivery.

View Component →
Graduated Droppers molded by Sanpin Medical
Transfer Pipettes And Droppers

Graduated Droppers

Droppers and transfer tubes with moulded graduation detail, for protocols where the user has to see how much was drawn.

View Component →
Disposable Syringe Components molded by Sanpin Medical
Syringe And Catheter Components

Disposable Syringe Components

Molded barrels, plungers, flanges and colour coded syringe parts for single use delivery devices.

View Component →
IV Catheter Components molded by Sanpin Medical
Syringe And Catheter Components

IV Catheter Components

Molded hubs, wings and housings for intravenous catheters, shown here coming off the production line.

View Component →
Biopsy Needle Handles molded by Sanpin Medical
Surgical And Specialty Devices

Biopsy Needle Handles

Molded handles and grip bodies for biopsy and sampling instruments, assembled onto steel shafts.

View Component →
Dental Impression Trays molded by Sanpin Medical
Surgical And Specialty Devices

Dental Impression Trays

Molded single use impression trays with a perforated arch, used to carry impression material in the mouth.

View Component →
Disposable Instrument Handles molded by Sanpin Medical
Surgical And Specialty Devices

Disposable Instrument Handles

Colour coded handles for single use instruments, molded around a metal working end.

View Component →
Ophthalmic Booster molded by Sanpin Medical
Surgical And Specialty Devices

Ophthalmic Booster

An ophthalmic delivery component carried over from the original product catalogue, molded as a body and cap assembly.

View Component →

See All Components

Who We Serve

Industries That Bring Us Their Hardest Tooling

IVD And Diagnostics
Industry

IVD And Diagnostics

Analyser consumables and sample handling parts where a moulding variation becomes a result variation.

See Applications →
Medical Device OEM
Industry

Medical Device OEM

Single use delivery and access devices where the tool, not the moulding machine, decides whether the device works.

See Applications →
Ophthalmic And Dental
Industry

Ophthalmic And Dental

Specialty single use devices in small volumes, with geometry that a general molder will usually simplify until it no longer works.

See Applications →
Automotive And Appliance
Industry

Automotive And Appliance

The divisions that gave us our volume discipline: automotive and white goods tooling running on the same equipment base as our medical work.

See Applications →
What Problem We Solve

Where Small Part Programs Usually Go Wrong

These are the three failures we see most often when a buyer comes to us from another supply chain, and each one has the same root cause.

The Tool Lives Somewhere Else

When the mold sits with one company and the molding machine with another, every dimensional correction turns into a shipment, a quotation and three weeks. Holding both on one site makes it a machine booking.

Nobody Owns The Assembly Fit

Split an assembly across molders and each part passes its own inspection while the assembly still fails. We prefer to hold every cavity of an assembly so the tolerance stack has one owner.

Records Stop At The Carton

A shipment that cannot be traced back to a cavity cannot be investigated. Our ERP system records the lot, the tool and the machine behind every delivery.

Solutions

How A Program Runs From First Drawing To Steady Production

Medical Mold Development
Solution

Medical Mold Development

From your 3D part data to a sampled, released production tool, without the part leaving our site.

See The Stages →
Clean Room Injection Molding
Solution

Clean Room Injection Molding

ISO 8 clean room molding and packing for parts that touch a sample, a drug or a patient.

See The Stages →
Two Shot And Coating Molds
Solution

Two Shot And Coating Molds

Complex tooling for parts that combine two materials or need a moulded in surface treatment.

See The Stages →
Prototype To Volume
Solution

Prototype To Volume

Getting from a first sampled part to a repeatable production lot without changing supplier halfway.

See The Stages →
Case Studies

Projects We Can Describe

Three projects documented from our own records. Where a customer is not named it is because we have no permission to name them, not because the project is invented.

Tooling A Multi Part Blood Separator
Case Study

Tooling A Multi Part Blood Separator

Thin clear sections warp as they cool, and a separator has to stay both dimensionally stable and optically clear across every cavity of every part in the assembly.

Read The Case →
Trust Center

Inside The Plant

Photographs from our own site rather than stock images. Each one is captioned with what it actually shows.

The Shenzhen plant in Maozhouhe Industrial Zone, Songgang Street, where tooling, molding and clean room work share one site.
The Shenzhen plant in Maozhouhe Industrial Zone, Songgang Street, where tooling, molding and clean room work share one site.
Injection molding workshop with operators in clean room garments, the area described on our original site as a Class 100000 molding workshop.
Injection molding workshop with operators in clean room garments, the area described on our original site as a Class 100000 molding workshop.
Clean room production area where medical components are molded and bagged without leaving the controlled space.
Clean room production area where medical components are molded and bagged without leaving the controlled space.
Clean room inspection and packing bay, where lot, tool and machine details are recorded before parts are sealed.
Clean room inspection and packing bay, where lot, tool and machine details are recorded before parts are sealed.
Catheter components in production, colour coded by gauge at the molding cell rather than marked afterwards.
Catheter components in production, colour coded by gauge at the molding cell rather than marked afterwards.
3D mold design issued for approval before any steel is cut, covering cavitation, cooling and ejection.
3D mold design issued for approval before any steel is cut, covering cavitation, cooling and ejection.

Equipment On Site

GF five axis machines for complex surface processing High speed machining centres for high precision detail Makino and GF spark erosion machines for fine cavity features.

Quality Control Flow

Mold design review before steel is cut Cavity by cavity sampling at tool release In process dimensional checks through the production shift.

Knowledge Center

Guides Written For Engineers Not For Search Engines

All Articles

Questions Buyers Ask

Questions We Are Asked Before A First Order

Do you build molds as well as mold parts?

Yes. Mold design, steel machining, EDM, sampling and volume molding all happen at our Shenzhen site, across four divisions and 260 people.

Are you certified for medical work?

We hold ISO 9001:2015 and ISO 13485:2016, and our certificate records also show EN ISO 13485:2016.

Do you supply sterile components?

No. Parts are molded and packed in an ISO 8 clean room and ship non sterile, so sterilisation stays with your validated process.

What tolerance can you hold?

Mold machining accuracy is 0.002 to 0.005 mm on ground surfaces, with medical and plug in mold work controlled at 0.002 mm. Part tolerance is confirmed against your drawing rather than quoted as a blanket figure.

How large a mold can you build?

Up to 5 tonnes and 1000 x 800 x 700 mm in our precision mold department, which builds 350 to 400 mold sets a year.

How do I start a project?

Email your 3D data and annual forecast to [email protected], or call +86 150 1404 0012. We reply with a feasibility review rather than a price alone.

Send Us A Drawing And We Will Tell You What It Will Cost To Tool

Email your 3D data with an annual forecast and we will come back with a feasibility review, a cavitation proposal and an honest view of anything in the design that will cause trouble in steel.