Table 1.

Quality control game income matrix of dairy farmers and dairy processing enterprises.

Dairy farmer	Dairy processing enterprise
	Advanced inspection（$y$）	Basic inspection（$1-y$）
Advanced prevention（$x$）	${\left(1+{\eta }_d\right)P}_d-C_d$， ${\left(1+{\eta }_e\right)P}_{\mathrm{e}}-C_e$	${(1+{\theta }_d)P}_d-C_d,\left(1+{\gamma }_e\right)P_e$
Basic prevention（$1-x$）	${\left(1+{\gamma }_d\right)P_d，\left(1+{\theta }_e\right)P}_{\mathrm{e}}-C_e$	$P_d，P_e$