Profile: Parsons Engineering Ltd. specializes in the production of gaseous pollution control equipment. We provide fume scrubbers, centrifugal fans, bulk storage vessels, plastic ductwork, plastic flow control dampers, de-gassers, plastic sound attenuators/silencers, and exhaust stacks. We also design and build a full range of stack-mounted attenuators that reduce special requirements and offer a very neat and innovative solution to this increasingly demanding environmental issue.