Variant of NAPCS Canada 2017 Version 2.0 - Manufacturing and Logging Rev.1 - Updated December 11, 2020
- 291 - Non-metallic mineral products
- 29111 - Clay and ceramic products and refractories
- 291111 - Refractories
- 2911112 - Non-clay refractories
- 29111120 - Non-clay refractories
- Date modified: