Powder covering versus anodizing was an eye-opener: powder provides abundant appearances and color depth

https://www.scribd.com/document/1041055982/Finials-That-Last-The-100-Year-Trajectory-of-Customized-Copper-Details-196087

Powder layer versus anodizing was an eye-opener: powder uses rich appearances and color depth, while anodizing exposes aluminum's metal clearness with phenomenal UV sturdiness.