Installing Sketch Map Cry stand Method NO Crystal Model Number Maintenance Precautions 1. 50-00Hz. 12MAT40¥ R27 2.Please wear gloves to install. 8.Don’ t install it on the moist ceiling. 4. Turn off the power before clean out. 5.Please wash with the sanitizer without corrosive. 6.Please install according to the installation manual. Keep the lighting away from acidic chemical solvent,Or the galvanized surface of the lighting will be deemed.