North American Product Classification System (NAPCS) Canada 2017 Version 2.0
- 251 - Pulp and paper
- 25123 - Paperboard
- 251231 - Recycled paperboard
- 2512311 - Recycled paperboard
- 251232 - Kraft packaging and industrial converting paperboard
- 2512321 - Unbleached kraft packaging and industrial converting paperboard
- 2512322 - Bleached packaging and industrial converting paperboard
- 251233 - Other paperboard
- 2512331 - Semi-chemical paperboard (including corrugating medium)
- 2512332 - Other paperboard (including wet machine board)
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