GREYSTONE ENERGY SYSTEMS INC.

Greystone Energy Systems Inc. is internationally recognized as one of the largest ISO registered manufacturers of HVAC sensors and transmitters for Building Automation Management Systems. Through leading-edge design technology, prompt technical support, a commitment to providing our customers the highest level of service, and over 40 years of experience designing, manufacturing and supplying HVAC sensors and transmitters, we are proud to have established a worldwide reputation as an industry leader. In 2021, Greystone became part of the Bemsiq Group; a group of innovative and fast-growing companies providing products in building automation and metering. The group is operating in Europe, North America, The Middle East, and Asia, with the ambition to build the most comprehensive portfolio of products within the smart buildings market. In August of 2024, Quatrosense Environmental Lt. (QEL) joined the Bemsiq Group as a subsidiary of Greystone Energy Systems Inc. QEL has built a very strong reputation in the gas detection market, offering a wide range of toxic, combustible, and refrigerant gas detection equipment for commercial and industrial applications, a very complimentary mix to

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