Analysis
NAICS 3346 is the 2022 industry group for manufacturing and reproducing magnetic and optical media, part of 334 (Computer and Electronic Product Manufacturing).
It has only one more detailed code, 334610, which covers exactly the same activities; the definition, index entries and statistics are on that page.
Between 2018 and 2023 the number of establishments fell 30% and employment fell 36%. The 2018 count used NAICS 2017, so part of a large move can come from codes being redefined rather than from businesses opening or closing.
By establishments it ranks 6th of the 6 codes at this level within Computer and Electronic Product Manufacturing, with 2.6% of them.
County Business Patterns counts 292 US establishments in this code in 2023, employing 4,540 people at an average annual payroll of $70,589 per employee (53rd percentile of national industries). 63% of the establishments have fewer than five employees, which marks it as a small-business industry.