Here are the covered sectors for Québec manufacturers.

311000 - Food manufacturing
312000 - Beverage and tobacco product manufacturing
313000 - Textile mills
314000 - Textile product mills
315000 - Clothing manufacturing
316000 - Leather and allied product manufacturing
321000 - Wood product manufacturing
322000 - Paper manufacturing
323000 - Printing and related support activities
324000 - Petroleum and coal products manufacturing
325000 - Chemical manufacturing (pharmaceutical, medecine, etc.)
326000 - Plastics and rubber products manufacturing
327000 - Non-metallic mineral product manufacturing
331000 - Primary metal manufacturing
332000 - Fabricated metal product manufacturing (Machine shops etc.)
333000 - Machinery manufacturing
334000 - Computer and electronic product manufacturing
335000 - Electrical equipment, appliance and component manufacturing
336000 - Transportation equipment manufacturing
337000 - Furniture and related product manufacturing
339000 - Miscellaneous manufacturing 
 

The search by the NAICS codes is available by the Advanced Search, criterion no 5.