Aluminium Nitride powder
<a href="https://en.wikipedia.org/wiki/user:Waprap" class="extiw" title="en:user:Waprap">en:user:Waprap</a>
2005-12-22
From English Wikipedia User Waprap who releases the copyright <br> 自英文維基百科，用戶Waprap已釋放了版權