Cleveland Demonstration Service Merchandise 23555 Euclid Ave PHG is a retail and research service company specializing in merchandising, installations, demonstrations and research. Our reps are available across the USA. A corporate team of project managers, analysts, moderators and interviews ensures every project is delivered on time, in budget and with results. Cleveland OH Demonstration Service Merchandise Pat Henry Market Research www.thepathenrygroup.com merchandising installations demonstrations market research medical research doctor research focus groups idi data collection reporting analysis mystery shopping merchandising installations demonstrations market research medical research doctor research focus groups idi data collection reporting analysis mystery shopping Business Reviews Pat Henry Market Research Testimonials