To provide a coating solution which exerts its inherent coating effect such as stainproofness, etc., without any loss of ground appearance or feel of a coated article and which itself can be stored for a long time, and an application equipment therefor.

An aqueous dispersion containing polytetrafluoroethylene particles, a fluorine-containing polymer, a silicone oil and wax, wherein dispersed particles are finely-divided through pressure-treatment of 100 to 900 kg/cm2, is used as a coating composition solution. Here, an antibacterial agent, etc., may be added. This coating composition solution is applied to the coated article, preferably by using an application equipment 10 equipped with an application component surface 11 having a pile fabric structure or a bonded fabric structure of a fine fiber and a retaining component 12 which retains the application component surface 11.