Supply of Swivel Bullet proof glass 610x330mm size 72mm thick glass with fabricated iron, Natural sand confirming to IS 383 of 1970 Specifications for coarse and fine, Supply of Swivel Bullet proof glass 610x330mm size 72mm thick glass with fabricated, Natural sand confirming to IS 383 of 1970 Specifications for coarse, Supply of Swivel Bullet proof glass 610x330mm size, Natural sand confirming to IS 383 of 1970