Quality Chemical (from Brline & Refrigo) for air-conditioning & Refrigertion system's clean-up and fin-coil cleaning. These right chemical can protect the erosion from rust and slag (in chiller closed system), can prevent the growth of moss, lichen and bacteria (in cooling tower system). Which will prolong system utilization time. During operation, dust, dirtiness, fat in the air will accumurate on coil, fin, fan and opening to lower down the heat transfer ability. This is the main cause of system inefficiency, which would lead to shorten the system's utilization time. It is crucial to use these Brline & Refrigo chemical to maintain the system at it best functional constantly.