# Yunnan XinYao signs $194M indium phosphide substrate deal with AOI

Yunnan XinYao Semiconductor Materials, a subsidiary of Yunnan Germanium, signed a long-term supply agreement with Applied Optoelectronics Inc. for 900,000 4-inch N-type indium phosphide substrates from 2027 to 2031. The first year (2027) contract is for 180,000 substrates valued at $194.4 million.

- Type: Contract
- Announced: 2026-09-19
- Where: China
- Value: $194.4M
- Status: announced
- Capacity: 90,000 4-inch N-type indium phosphide substrates per year
- Products: 4-inch N-type indium phosphide substrates
- Sectors: [Semiconductors and Industrial Electronics](https://endata.com/sectors/semiconductors-electronics.md)

## Companies

- [Applied Optoelectronics](https://endata.com/companies/15398.md) (customer)
- [Yunnan Xinyao Semiconductor Materials](https://endata.com/companies/15603.md) (supplier)
- [Yunnan Germanium](https://endata.com/companies/15604.md) (partner)

## Sources

- [sina.cn](https://www.sina.cn/news/detail/5361223583402220.html), 2026-09-19: "AOI预计于2027年至2031年期间向云南鑫耀每年采购18万片、合计90万片4英寸N型磷化铟衬底"

---
Data from Endata (https://endata.com/). Announcements are summarized from public sources and may be incomplete; check the linked originals.