North American Product Classification System (NAPCS) Canada 2017 Version 2.0
- 291 - Non-metallic mineral products
- 29112 - Concrete products
- 291121 - Concrete blocks and bricks
- 2911211 - Concrete decorative blocks and bricks
- 2911212 - Concrete structural blocks and bricks
- 291122 - Concrete pipes and fittings
- 2911221 - Concrete pipes and fittings
- 291123 - Other precast and prestressed concrete products
- 2911231 - Precast concrete products, n.e.c.
- 2911232 - Prestressed concrete products, n.e.c.
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