Zhao Ping'an looked at him and then said: "毛利潤 refers to the revenue from main business operations minus the cost of main business operations. Of course, this is only the definition in textbooks. In c...
Zhao Ping'an looked at him and then said: "毛利潤 refers to the revenue from main business operations minus the cost of main business operations. Of course, this is only the definition in textbooks. In c...