19 10 yuan. According to the Notice on Payment of Staff Provident Fund of Yantai Development Zone Water Supply Co., Ltd., the payment base of Yantai Provident Fund is the average monthly salary of employees in the previous year, and the payment base of staff provident fund of Yantai Development Zone Water Supply Co., Ltd. is 19 10 yuan. Provident fund, also known as reserve fund, includes statutory provident fund and arbitrary provident fund, which refers to a kind of money drawn from the company's profits according to law in order to enhance its own property capacity, expand production and operation and prevent unexpected losses.