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Which is better, Cao or PetroChina?

China oil is good. BOSS's direct employment information shows that the salary of China Aviation Oil Company is 4,000 to 5,000 yuan, with five insurances and holidays, while the salary of China Petroleum Company is 3,500 to 5,000 yuan, with five insurances and one gold, with holidays and bonuses at the end of the year, so China Petroleum Company is good.