Etching is using designed pattern etched into different personality patterns, very beautiful.

Aluminum is dual particularity materials, fear of acid and alkali, so Etching solution sometime use alkaline, sometime use acid, normally we use acidic materials while alkaline material can make aluminum white.Using charcoal to grind , remove the greasy and cutting marks, made the surface matt, then printing patterns with silk print, ink model is 80-39,80-59, 80-49 and so on.This kinds of corrosion-resistant ink delicate and high print quality. After print, drying it with furnace, sealed the side with tape, into the etching process.