Answer. When selecting a primer‑finish coating, the following factors are considered: surface type (steel, aluminum, galvanized coating), service conditions (outdoor or indoor work, humidity, chemical exposure), required lightfastness, gloss and decorative properties, and application method. For transport and exterior objects, acrylic‑urethane primer‑finish coatings are suitable, for interior anti‑corrosion and barrier systems – epoxy, and for chemically aggressive environments – epoxy‑phenol‑wax chemical‑resistant primer‑finish coatings. Proper selection guarantees coating durability and minimal maintenance costs.