πŸ‡ΊπŸ‡Έ United States

9002907000

Halftone screens designed for use in engraving or photographic processes

Details

Parent HS6
900290 Optical elements; n.e.c. in heading no. 9002 (e.g. prisms and mirrors), mounted, being parts or fittings for instruments or apparatus, of any material (excluding elements of glass not optically worked)