Among all the factors of choosing led high bay brands for project, 75% goes to high product quality, 72% goes to cooperating brands, 70% goes to appropriate price product, 68% goes to brands required by clients, 45% goes to complete aftersales service and others is 2%. Here we can tell that, designers are mostly affected by quality of LED Lighting products, cooperating brands and lamp product prices when choosing LED Lightsproducts.So how many brands recommended by designers are finally accepted by clients? The following ratio is result for survey of brands accepted by clients.From the survey graph it can be told that zero designers can reach a hundred percent chosen rate, 40% can reach the ratio of four fifth, 53% can reach half chosen, and 7% is less than one fifth. So the effect designers have on clients is maintained at around 50%.