SI Manufacturing, Div. of Spectrum Educational Supplies Ltd. is rated 3 out of 5 in the category electrical/electronic manufacturing. Read and write reviews about SI Manufacturing, Div. of Spectrum Educational Supplies Ltd.. SI Manufacturing is Canada's leading manufacturer of Math, Science & Technology educational materials and has been distributing its well-known product line worldwide since 1968.
Company size
11-50 employees
Headquarters
Newmarket, Ontario