Hello, it is understood that the minimum removal efficiency limit value of the oil smoke purification facilities of the catering industry unit is divided into large, medium and small three levels according to the scale; the scale of the catering industry unit is divided by the number of benchmark stoves, the number of benchmark stoves is calculated according to the total heating power of the stove or the total area of the exhaust hood stove surface projection. Each benchmark stove corresponding to the heating power of 1.67 × 10J / h, corresponding to the exhaust hood stove surface projection area of 1.1m2.

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