A Hong Kong company for a market measured in microns.
STWIR Hong Kong Limited manufactures and supplies lab-grown diamond components, from HPHT single-crystal substrates and anvils to CVD optics, heat spreaders, detectors and brazed assemblies, to research institutes, instrument makers and OEMs worldwide.
Technical diamond only.
We do not sell gemstones and we do not sell jewellery. STWIR exists to turn grown diamond into components with a defined plane, a defined tolerance and a defined purity, and to be straightforward about what the material can and cannot do in a given position.
Our customers in high-pressure physics, photonics, thermal management and beam instrumentation are not buying a commodity. They are buying a specification, a delivery date and the confidence that the part will do what the passport says. We organise the company around those three things.
Two decades at the press and the polisher.
The team behind STWIR has grown, cut and polished diamond for research and industrial customers for roughly twenty years. That experience shows in unglamorous places: in knowing which crystal will make an anvil and which will not, in holding a gradient steady for three hundred hours, and in declining a specification politely before it becomes a returned shipment.
Why Hong Kong.
Hong Kong places us at the junction of Asia's densest precision-manufacturing supply chain and a legal, banking and logistics system that international customers already know how to work with: common-law contracts, a freely convertible currency, a free port, and same-day air connections to every major research centre in the world.
For you it means dealing with a Hong Kong incorporated company under Hong Kong law, invoiced in the currency you prefer, with people who answer email in your working hours and in English, German, French or Chinese.
Four habits.
Quote the tolerance we hold
Not the one we achieved once on a good day. If a specification is not manufacturable we say so before the order, not after.
Measure every part
Data costs less than a returned shipment. Every part is measured, every measurement is kept.
Recommend the cheaper grade
When a polycrystalline part or a lower grade will do the job, we say so. Customers who save money come back.
Answer in one business day
Technical enquiries are answered by people who understand the process, not by a ticketing system.
The formalities.
- Legal name
- STWIR Hong Kong Limited
- Place of incorporation
- Hong Kong Special Administrative Region, People's Republic of China
- Registration No.
- A-B-25-04-09008
- Certificate
- Registration certificate (PDF)
- Telephone
- +852 2127 0505
- info@stwirhk.com
- Working languages
- English · Deutsch · Français · 中文
Work with us.
One plate for a feasibility test or a qualified supply for a production programme: the conversation starts the same way.