Why is the salary of Merchants Shekou so high?

China Merchants Shekou is a state-owned enterprise. China Merchants Shekou is a state-owned enterprise, that is, China Merchants Shekou Industrial Zone Holding Co., Ltd. and China Merchants Group Co., Ltd., because it is a state-owned enterprise subsidiary, the monthly salary is 15 to 30K, as well as five insurances and one gold, holiday benefits and so on. Therefore, the salary of China Merchants Shekou is high.