Sanpin Medical Medical injection molding since 2007

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. 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.

What we mold

Small disposable plastic components: luer fittings, reaction cups, blood separation parts, pipettes and syringe components.

Who we serve

IVD instrument makers, disposable device brands, ophthalmic and dental companies, and contract manufacturers.

What problem we solve

Most buyers of small medical parts use one supplier for the tool and another for the molding, and lose weeks whenever a dimension drifts.

Why customers choose us

The tool, the molding process and the clean room sit in one plant, so a correction is made in days rather than negotiated between two suppliers.

Product Range

Six families of molded medical components, all tooled and molded in the same plant.

The Numbers Behind the Factory

2007In business since
0.002 mmMold machining accuracy, best case
350–400Mold sets built per year
ISO 8Clean room class for molding

Industries We Supply

Industries that bring us their hardest tooling, and what each one is actually buying.

Knowledge Centre

Written for engineers who have to specify a moulded medical part, not for search engines.

How an Order Runs

  1. 3D data and volume

    Send the model, the annual volume and the material. We come back with a tooling cost and a view on what will be hard to mould.

  2. Mold design and build

    Cut in house to 0.002 to 0.005 mm, with no outside subcontracting of the tool.

  3. Sampling and validation

    Samples are molded and measured, and any correction is made to the tool here rather than negotiated with a second supplier.

  4. Clean room volume production

    Molded in an ISO 8 clean room so tooling tolerance survives all the way to the packed carton.

Frequently Asked Questions

Do you build the mold as well as mold the part?

Yes, and that is the point. Mold design, tooling, sampling and molded volume all happen in one plant without outside subcontracting, so a dimensional correction is made in days rather than negotiated between two companies.

What clean room class do you mold in?

ISO 8, also called class 100000. Molding and assembly both take place inside it, which matters for parts that touch a blood sample or a sterile fluid path.

What tolerance can you hold on the mold?

Mold machining accuracy runs from 0.002 to 0.005 mm depending on the feature. The moulded part tolerance that follows from it depends on the material and the geometry, and we state both in the quotation rather than quoting the mould figure alone.

Are you certified for medical device work?

Certified to both ISO 13485:2016 and ISO 9001:2015, with molding in an ISO 8 clean room. The certificates and the clean room class are stated here so they can be checked before an audit rather than during one.

Send us a drawing and we will tell you what it will cost to tool

Send the 3D data or the drawing with the annual volume and the material. You will get a tooling cost, a sampling schedule and an opinion on anything in the design that will be difficult to mould.