Food-grade nano ceramic non-stick coatings use sol-gel process——TEOS/MTES/aluminum isopropoxide/titanium butoxide precursors——hydrolysis-condensation forming Si-O-Si and Si-O-Al inorganic cross-link networks on aluminum/SS cookware surfaces(sandblasted,anchor 20-40um). vs PTFE: PTFE organic fluoropolymer(physical adhesion,deteriorates>250C,releases PFIB toxic gases),nano ceramic inorganic Si-O-Si network(chemical bonding,heat resistant 450C,safety margin>200C). Hardness 5-7H(PTFE<1H),metal spatula 100K cycles zero substrate(GB/T 32388-2015 abrasion>15000). Non-stick: egg no-oil>90%(initial),>70% after 500 uses(vinegar/citric acid restores). PTFE replacement: 3M full PFAS exit by end 2025; EU bans PFAS in food contact materials 2026-2027. FDA 21 CFR 175.300,GB 4806.10-2023(total migration<10mg/dm2). Global non-stick cookware $12B(2025),ceramic 25%(CAGR 12%).