Check this person out for sunpac sheets.
he is a dealer............. if u r building electrics, use 3mm(not more).... I've had best results with them
Company Name: Soorya Enterprises
Contact Person: Mr. Imran Soorya (Manager)
Telephone: +(91)-(22)-23727205
Address: 148 Victoria Road, Opposite Anza Church, Byculla
Mumbai, Maharashtra - 400 027 (INDIA)