Expire is not really the right term; but effectively yes. In general a cheque older than six months will be considered stale-dated and will not be honoured. Reference the Canadian Payments Association FAQ.
SKYACTIV is a brand name for a series of technologies developed by Mazda which increase fuel efficiency and engine output. The initial announcement of the SKYACTIV technologies include new engines, transmissions, body, and chassis, which appeared in Mazda products from 2011.
What is eMatrix? eMatrix is the Product Lifecycle Management (PLM) software tool used at 3M. It is a suite of applications marketed under the brand name Enovia from Dassault SystÃ¨mes. CAD tools, (if you create and revise CAD drawings in Unigraphics, AutoCAD, ProE, Solidworks) while interfacing with eMatrix.