Major oil players Pilipinas Shell Petroleum Corp. and Caltex (Philippines) last week raised the price of liquefied petroleum gas (LPG) by P1.70 a kilogram or P18.70 for an 11-kilo cylinder. (US$1=55 pesos). The Petron Corp., and Total (Philippines) Corp. have yet to announce if they would hike LPG prices as international oil prices remain just…