ICNEA 3052—Optical glass manufacturing

Where 3052 sits

1. C Manufacturing industry
2. 30 Non-metallic mineral products industry
3. 305 Glass product manufacturing
4. 3052 Optical glass manufacturing

What 3052 includes

• Including the manufacturing activities of the following optical glass：
• Optical element blanks: optical element blanks, optical lens blanks, optical glass secondary compression blanks, and other optical element blanks
• Optical glass blanks for glasses: lens blanks for glasses for correcting vision, lens blanks for glasses for correcting vision discoloration, flat discoloration lens blanks, optical glass blanks for other glasses
• Glass for optical instruments: microscope glass, magnifying glass, telescope glass, camera lens glass, glass for other optical instruments
• Signal glassware: signal glassware for reflective road signs, signal glassware for vehicle reflectors, and other signal glassware
• Other glass optical components
• Refers to optical glass used in magnifying glasses, microscopes, optical instruments, etc., daily optical glass, glass for watches or similar glass, the manufacture of blanks of optical glass glasses, and the manufacture of optical glass components that have not been optically processed.

What 3052 excludes

• The manufacture of glasses into glasses is included in 3587 (glasses manufacturing)
• The manufacture of optically processed optical glass components is included in 4040 (Optical instrument manufacturing)

3052 in other systems