{"L1_core": {"domain": "manufacturing", "category": "process", "identifier": "pol_pulido", "subcategory": "surface_finishing"}, "L2_process": {"type": "abrasive_finishing", "method": "polishing", "finish_type": "mirror", "temperature": "cold", "material_removal": "minimal"}, "L4_quality": {"controls": ["roughness_measurement", "visual_gloss", "reflectometry", "uniformity_check"], "tolerances": "tight", "surface_parameters": ["Ra", "Rz", "gloss_units"]}, "L5_metadata": {"source": "technical_standards", "confidence": 0.94, "last_updated": "2026-01-04", "industry_codes": ["surface_finishing", "decorative", "optical", "medical"]}, "L3_technical": {"abrasives": ["aluminum_oxide", "chromium_oxide", "synthetic_diamond", "polishing_compounds"], "equipment": ["belt_polisher", "disc_polisher", "orbital_polisher", "vibratory_tumbler"], "parameters": {"grit_range": "800-8000", "final_Ra_um": "0.05-0.4", "initial_Ra_um": "0.4-3.2", "peripheral_speed_ms": "20-35"}}}