A. Environmental Aspect (No secondary pollutants) Treatment of perished fishes can be quite challenge as it easily contaminates environment by generating large volume of CO2 during transit and storage. Especially, when bury perished fishes, 2nd and 3rd damages of environmental pollution by leachate must be considered. Therefore, in order to choose a method to treat perished fishes, these secondary side-effects must be taken into consideration. B. Economical Aspect (Low operational costs) - A system that requires minimal operational costs should be considered. Among operational costs, manpower and energy costs are taking the largest percentage. Thus, if possible, the system that requires the least costs of energy, manpower and auto-pilot should be taken into consideration. C. Operational Aspect (Easy and rapid counter measure) Operation, maintenance and repair of a system from overseas can become difficult time to time. Therefore, all necessary know-how and technology must be properly trained together with a system.