hello to everyone

I am from Mexico and I have been struggling trying to find some materials on EUA suppliers

Square Tube 1-3/4 x 1-3/4 x 1/8 Wall. Material Aluminium 5052-H32
plate 1/4" Material Aluminium 5052-H32
metal sheet gauge 9 Material Aluminium 5052-H32
Round Bar 1/2" Material Aluminium 5052-H32
Square Bar 1" x 1" Material Aluminium 5052-H32

please let me know the current suppliers that you know since I want to my commitment on the date with my client.

other thing let me know if is correct what I wrote.

thank you.