Building area of 50,000 square meters of plant fire budget about how much?

This depends on the nature of the need to use, C and D are completely different, D only need to set up a single-strand hydrant water supply and emergency lighting, fire extinguishers; C need to increase the setting of the automatic alarm and automatic sprinkler system, the price difference is more than double, basically, D and E per square meter 40-50 yuan or so, C 130-150 yuan / square meter or so.