1. For example, Shin-Etsu Chemical Co., Ltd., http://www.shinetsu.co.jp/e/index.shtml.
2. For example, Cree, Inc., http://www.cree.com/.
3. For example, Element six., http://www.193.120.252.126/cvd/page.jsp?pageid=100&lang=en.
4. For example, EDP Co., http://www.d-edp.jp/index.html.
5. Crystalline perfection of high purity synthetic diamond crystal