Nu-Vu Conair Pvt. Ltd. Manufactures Bolted Silos. Nu-Vu Conair Pvt. Ltd. Offers complete solution for plastics Auxiliaries equipments. Bolted Silos are manufactured in SB Series. These are available in 12` to 3 11/16", 15` to 4 5/8", 18` to 5 9/16" diameters.