Pullteap, S., Samartkit, P., Kheovichai, K. and Seat, H.C. 2020. A software development for investment analysis of LED lighting production project using fuzzy logic technique. Science, Engineering and Health Studies. 14, 2 (Aug. 2020), 83–100. DOI:https://doi.org/10.14456/sehs.2020.8.