请问加拿大有哪些知名的IT公司?答:Greo Products Inc., ISM-BC Corp., Seagate Software, Sierra Wireless, Inc., PMC-Sierra Inc., Infowave Wireless Messaging Inc., QLT PhotoTherapeutics Inc., MacDonald Dettwiler and Associates, Prologic Corp., Pivotal Corp., Ingenuity Works Inc., Glenayre, Angiotech Pharmaceuticals, In...