???? APT (ammonium paratungstate)? ?? ??? ??????. ? ??? ???? ???? ????. APT? ??? ????. ?? APT? ??? ????. ??? ??? ??? ?? ????.
??? ??? ??? ??????.
http://ammonium-paratungstate.com/korea/index.html

APT ?? ??
100L? ???? ? ??? ?? ?? (3.5g / L NH3, 45.2g / L W ? 50L ? ??? ??)? ?? ??? 200L ?? ???? ????. ????? ?? ??? ? ??? ???? 200kg? ???. ?? ?? ???? 85 ° C?? 3 ?? ?? ????? ?????. NH3 : W? ??? 0.83 : 1 ? ?? ??? NH3 ??? 3.5g / L???. ????? pH? 6.9???. ??? ???? ???? 1.14 : 1. ???? ???? 10L? ? ???? ?? ? ?? ????? 100 ° C?? ???? 190kg (?? 98.1 %? ??)? APT? ???.
 
					 
						
		![[Korean] APT ?? ?? APT ?? ??](http://m.sscollege.cn/jp/wp-content/uploads/2021/01/a-preparation-method-of-APT-picture-702x336.jpg) 
					
										
								
				![[Korean] ??? ??? ?? ??? ?? ??? ??? ???? ??? ??? ?? ??? ?? ??? ??? ????](http://m.sscollege.cn/jp/wp-content/uploads/2025/10/yellow-tungsten-oxide-nanopowder-applied-for-heat-insulating-energy-saving-glass-picture-214x140.jpg) 
									 
									![[korean] ?? ?? ?? ??? ??? ??? ?? ?? ?? ?? ?? ??? ??? ??? ?? ??](http://m.sscollege.cn/jp/wp-content/uploads/2025/10/tungsten-oxide-nanopowder-applied-for-transparent-heat-insulation-glass-coating-picture-214x140.jpg)