1. Institute of Environment ‐ Energy Technology Sai Gon University, 273, An Duong Vuong Street, Distr. 5 Ho Chi Minh City 70000 Viet Nam
2. Lu Gia Junior High school 52/1A, Lu Gia, 15 Award, Distr. 11 Ho Chi Minh City 70000 Viet Nam
3. Hong Bang Junior High school 132 Hong Bai, 12 Award, Distr. 5 Ho Chi Minh City 70000 Viet Nam
4. Faculty of Environmental Sciences Sai Gon University 273, An Duong Vuong Street, Distr. 5 Ho Chi Minh City 70000 Viet Nam
5. Faculty of Natural Sciences Pedagogy Sai Gon University 273, An Duong Vuong Street, Distr. 5 Ho Chi Minh City 70000 Viet Nam