United Workers of Petroleum Industry was formed in 1961.
They represent employees in the petroleum
Marcus works in Neste Singapore PTE LTD. He is an Executive Council Member of UWPI. His hobby is traveling.
Brother Keng Tia works in Vopak Terminal Singapore. He is the Vice President of UWPI. His hobbies include bowling and fishing. He is also the chairperson of Young NTUC Committee.