Darari, A., ., M., & Wibowo, A. S. (2015). Potfrigator Technology : Preservatives Equipment Low Energy For Fish and Reducing Hazardous Heavy Metals Based Photocatalytic Co Doped ZnO and Cooling Dynamic System. KnE Energy, 2(2), 16-21. https://doi.org/10.18502/ken.v2i2.352