On what date does Li Ding Optoelectronic Company pay its salary every month?

The 20th. Xiamen Li Ding Optoelectronic Co., Ltd. is located in Mei Xin Road, Xinyang Industrial Zone, Haicang District, Xiamen, and is a company that manufactures instruments. Its working hours are from 8 am to 5: 30 pm, and its salary is paid on the 20th of each month. On weekends, I occasionally work overtime, mainly engaged in the manufacture of photoelectric products and auto parts.