... Flame, Black Powder in Mining, Fuse (Ignition Wire) and Firecracker.- Used for Heat Transfer Salts, Heat Treatment Salt Bath, ... Optical Glass Grade- Used as Glass Refining Agent and for the production of Auto Lamp Glass, Optical Glass, Cell ... additional fertilizer,Foliar fertilizer, cultivation without soil, especially suitable for tobacco, fruit crops.- Specification (Industrial Grade) Testing Items/ ...