Galvanized Sheet Steel

We are Russian company specializing in engineering and construction of the grain elevator systems.
We are writing to enquire about the following material:
Galvanized sheet steel,
cold-rolled
Dimensions: 1250x2500 or 1500x3000,
Thickness: 3 mm
Zin? coating - from 275 g/cu.m (Z 275)

Quantity: 40 tons.