I've ordered a new chassis for my Renault 4 van. The rear suspension fell off the old one so it was probably about time. Struggling to translate French into English and the manufacturers don't offer any clues. Cataphorese costs 350 euros more than Electro-Zingue I'm guessing Cataphorese is ecoat which is a dip that should also treat the inside of the chassis, but it's black and that seems a bit odd as we prefer a greeny brown over here. I have no idea if electro-zinque is some sort of zinc dip or just some zinc rich paint charged to reduce wastage. I want to figure out if I need to paint the thing when it gets here. I ordered Cataphorese because it's black already and I don't have a paint shop set up just now. Can anyone make sense of it, maybe speak French or have ideas about the terms?