A cleaning service program water system: 1.1 reasons for cooling and cleaning water systems: cooling water is generally used groundwater or softened water, hard water, long-term use is easy to scale in the pipe, and because it is open-cycle the system is easy to breed algae microbes multiply used refrigeration equipment, thereby reducing the pipe cross-sectional area of ??refrigeration equipment, increasing the pipeline flow resistance of industrial refrigeration equipment, the impact of the cooling effect of the air conditioning host cause serious harm. Cooling tower lack of professional maintenance, easy to make water tray and packing scaling serious, and even the collapse of refrigeration equipment repair filler deformation, seriously affect the effect of cooling water heat exchange system, affecting the life of the host. 2, cleaning services program air system: 2.2 cleaning and disinfection programs: ① various types of filter cleaning: including new air handling units, air conditioning units, fan coil intake and return air filter. ② air conditioning equipment inside cleaning: Regular flushing fresh air unit, air conditioning units, fan coil fin coils, condensate drain pan, inside the box over the wind, into the duct to reduce harmful substances. ③ The "robot" duct cleaning technology, within the wind pipe be thoroughly cleaned. ④ other can filter replacement in accordance with the actual situation in effect, circulating air system add shielded UV sterilizer. _ Snow Dragon refrigeration refrigeration equipment (certified) _ refrigeration equipment provided by the Dongguan City-long Refrigeration Electrical and Mechanical Equipment Engineering Co., Ltd. Dongguan City-long Refrigeration Electrical Equipment Engineering Co., Ltd. (www.dgxuelong.com) is Dongguan, heat, refrigeration and air conditioning equipment leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. In the Snow Dragon refrigeration leadership with the staff warmly welcome all inquiries negotiations to create a better future XUELONG refrigeration.