North American Product Classification System (NAPCS) Canada 2017 Version 2.0
- 642 - Research and experimental development services
- 64232 - Research and experimental developmental services in engineering and technology
- 642327 - Research and experimental developmental services in environmental engineering and biotechnology
- 6423271 - Research and experimental developmental services in environmental engineering
- 6423272 - Research and experimental developmental services in environmental biotechnology
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