What is cinq's black front bumper made of ??

thinking of painting my front bumper(black, plastic, without any colouer base) by myself in my shed , but need to know plastic type(for appropriate base colour) - is it abs, pp, or what?? anybody knows??

thanks

if you look on the back, inside the bumper there will be a stamp, etching to say what its made from, dont forget to use a plastic primer suitable for it, usualy pur pu pp i use an aerosol 3m one, or ici 212, Ant!