AFTER TWO straight weeks of decline, prices of petroleum products are set to increase this week to reflect the movement in the international market, oil companies said. Gasoline prices will rise by P0.20 per liter (/L), while diesel and kerosene prices will both increase by P0.45/L. All of the companies that sent their price adjustment advisories as of late Monday afternoon will be raising pump prices at 6:00 a.m. on Tuesday, June 19. — Victor V. Saulon