16456 Sixsmith Dr., Long Sault, ON

GREYLINE INSTRUMENTS INC. manufactures flow and level instruments with non-contacting, ultrasonic sensors. These products are used in a variety of industries, water and wastewater treatment where flow of liquids or tank level require automated ...

103 Warner Dr., Long Sault, ON

OUR FIRM Established in 1984 HSP serves primarily the industrial commmunity. Our engineering and enviromental services are complete and affordable. Our professional staff of engineers, designers and technologists work closely with our ...