Department of Trade and Industry (DTI) and Department of Energy (DOE) Joint Circular No. 09-01 - Implementing Guidelines for the Performance and Energy Labeling Requirements on Self-Ballasted Lamps for General Lighting Services covered by (1) PNS IEC 969:2006, Self-ballasted lamps for general lighting services - Performance requirements and (2) PNS 2050-2:2007, Lamps and related equipment - Energy efficiency and labeling requirements - Part 2: Self-ballasted lamps for general lighting services