Plumbing Contract - Installation only

This is a installation contract for 4BHK villa in Dubai.
PPR Piping GF & First Floor including insulation and supporting works.
PPR pipe works ( cold & hot water), concealed.
Installation of Drainage Soundproof Pipes for 4 bed room villas for High Levels& Riser for GF and FF Including Fittings and its Supporting Works (Drainage SP/WP/VP,Balcony Drain.
This work is for the whole villa.