🧪🔩✨

#chemical etching #acid etching #metal etching #engraving #corrosion art #surface treatment

💿🧪🔥⚙️

#wafer processing #chemical etching #plasma etch #deposition #annealing #thermal process #semiconductor materials #fab process #doping

🔬🧪➖

#chemical etching #microfabrication #PCB etching #silicon etching #industrial process #material removal #photomask