Widra SPRL International Industrial Weighbridge Scale&Silo Co.,which is a supplier of double size galvanized spiral steel silos.Bidragon spiral steel silos are widely used in agricultural,industry and environmental protection,such as grain silo,wheat silo,Flour Silo, corn silo,feed silo,seed silo,cement silo, Oil Silo and so on.Our steel silos have successfully entered the international market.We provide users with 50 to 10000 tons of different kinds of silos.