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- TOPPAN Photomask: https://www.photomask.com/
Pricing: ~$500 for Chrome and $700 for Iron Oxide. - Frontrange Photomask: https://frontrange-photomask.com/
- Advance Reproductions: http://advancerepro.com/
- Benchmark Technologies: http://www.benchmarktech.com/photomasks
- Applied Image: https://www.appliedimage.com/products/photomask-semiconductor-services
- Ben Yu: Pricing was ~$550 dollars for chrome, took a lot of back and forth to get 4 um features, quote 1 week lead time.