There are several benefits for your research why to search once for other companies as to stay always at the same one:
- finding same product but cheaper (e.g. crystals, mechanical components, daily used things)
- better quality or performance (measurement devices)
- better support/ shorter delivering time (that is an important aspect)
- new products/ ideas for your research
You can browse by product/ service/ company name and region. The guide contains profiles and contact information for more than 4000 manufacturers and suppliers of photonics products and services worldwide. The page is clearly laid out and information are updated. Try it!
One more motivation why to know such a guide... if you are searching a job in the optics industry, you can find with the guide easily all the companies in your country ;).