Indorama Polyester Industries Plc (Nakhon Pathom) and TPT Petrochemicals PCL received a certificate signifying they have achieved the Thai Labor Standard TLS 8001-2010 Certificate Completion Level Initiative Phase from The Ministry of Labor’s Department of Labor Protection and Welfare effective from 11th July 2011. Thai Labor Standard, or TLS, covers the regulations and practice concerning labor employment and working conditions, including wages, working hours, holidays and safety at work. The TLS helps protects all labor equally, with good quality of life, safety and good employee relations so that they work with high morale.