The 15th of every month. After browsing the payroll schedule of Dongying Gangnuoer Biotechnology Co, Ltd, we can see that Dongying Gangnuoer Biotechnology Co, Ltd pays salaries on the 15th of every month. Salary is the remuneration paid in monetary form for the labor of an employee by the employer or legal employer in accordance with the provisions of the law, or the provisions of the industry, or in accordance with the agreement between the employer and the employee.