Tags Pham Van Thanh Petrolimex appoints new chairman Wednesday, May 02, 2018 Viet Nam National Petroleum Group (Petrolimex) has appointed PhamVan Thanh the new chairman of the group for the period of 2016-2021, starting May 1, 2018. Rubber giant plans IPO, exchange listing Friday, Jan 19, 2018 Viet Nam Rubber Group is expected to list its shares on the HCM Stock Exchange in June or July after its initial public offering on February 2.