9.Various uniform and gentle colors such as brown,golden-yellow,golden-green and skyblue were put on aluminum surface via a variety of coloring methods.
10.Anionic electrodeposit coating line for aluminum shell of solar water heater is introduced.Anodic oxidation,anodizing electrolytic coloring and anionic electrodeposit coating process are focused.
11.Neodymium is a bright, silvery rare-earth metal element, found in monazite and bastnaesite and used for coloring glass and for doping some glass lasers.
12.The coloring matter are separated by YWG-C18,the best wave is found by DAD detecter, the quantitative method is standard curve , the result is accurately ,the method are used simply.