How is the pen flushing and disinfecting work at COFCO pig farms? Who has done it?

The COFCO pig farm does a good job of pen flushing and disinfection. COFCO pig farms require personnel to be in good health, have a high school degree or above, have five insurances and one housing fund, include food and accommodation, and receive generous holiday subsidies. COFCO Pig Farm is a large-scale state-owned enterprise integrating breeding, production and sales of breeding pigs. It is a large-scale breeding farm and a breeding and promotion base for breeding pigs in Henan Province.