Question on using Appliance Epoxy Spray Paint

I have a variety of candy's I want to restore away from a yellowed plastic state. Currently I am restoring a Net City. I am just curious. Do I sand and primer the plastic before using this stuff, or just throw it right on there?

DIY: refrigerator from off white to stainless steel! – Wanderly Blog

Question about Rustoleum Appliance paint for frames

Rust-Oleum 7881830 Specialty Appliance Epoxy Spray Paint, 12 oz, White - Spray Paints

Epoxy paint is perfect for updating and coordinating household appliances. The stain, scratch, and fade-resistant formula protects surfaces for years. Durable, scrubbable, and colorfast. Resists household cleaners, withstands stains, grease, and grime. Dries to the touch in 30 minutes. Great for use on appliances (not stoves), file cabinets, cupboards, counters, and desks. Net weight 12 Oz. Coverage 20 to 25 Sq. Ft. on solid surface.

Krylon Gloss Epoxy White 12 oz. Appliance Spray Paint

Question on using Appliance Epoxy Spray Paint

Ideal for refinishing exterior metal surfaces including refrigerators, dishwashers, laundry machines and more Epoxy formula creates an ultra hard,

Rust-Oleum 7886830 Specialty Appliance Epoxy Spray Paint, 12 oz, Black

WEST MARINE Outdrive Antifouling Spray Paint

Rust-Oleum Specialty Appliance Epoxy is ultra-hard, moisture resistance enamel that is specifically formulated for indoor metal surfaces. It provides

12 oz. Appliance Epoxy Stainless Steel Spray Paint (6-Pack)

Have a question about Rust-Oleum Specialty 12 oz. Appliance Epoxy Stainless Steel Spray Paint (6-Pack)? - Pg 1 - The Home Depot