How much does it cost to clean the flue in the hotel kitchen?

Hello, I'll give you a quotation for smoke cleaning system: range hood 20-25 yuan/square meter; Transverse smoke exhaust pipe in smoke exhaust hood 20-30 yuan/m2; More than 0.4m * 0.4m 30-50 yuan/m2; Smoke exhaust standpipe is less than 0.4m * 0.4m30-60 yuan/m2; 25-35 yuan/m2 above 6 meters above sea level; 6 meters below the low-altitude smoke hood apron; 20-25 yuan/m2; Decorative Waterwheel 10-20 yuan/piece; Only the grate of the range hood with water lift 15 yuan/block; Smoke filter exhaust fan 300-500 yuan/set; 400-600 yuan centrifugal fans below 7.5kW/set; Under 7.5 kW, the ventilator/fume purifier is 300-500 yuan/cooker.