We have invited Mr. Wong King Shing Jason the co-founder of Biotek Ozone Hong Kong Limited and V-ZAP Hong Kong to share information about latest development in Environmental Safety and Quality Improvement at Railway segments in pandemic days by innovation technology. The presentation will cover the following topics: • Deodorization in underground / tunnel / Railway station / underground shopping mall environment • Bio-digestion of biomass / biowaste and deodorization along rail line • Air & Surface disinfection with surface protectant inside car box and railway station against COVID-19 • Railway station washroom deodorization • Railway officer room air disinfection against COVID-19