Puzolan Son Tay Joint Stock Company Address: No 56, Thanh Vi Street, Son Loc Ward, Son Tay Town, Ha Noi City Enterprise code: 0500433555 Phone: 02433931191 Representative: Trinh Phuc Hau Adress: No 100, Thanh Vi Street, Son Loc Ward, Son Tay Town, Ha Noi City Son Loc Ward, Son Tay Town, Ha Noi CityFounding date: 15 - 1 - 2003