... powder in ranges of 20~300nm at your requests. Metallic nano tin particles powder Appearance: Tin nanoparticles are pale grey to ... , no other color mixed, ball shape, no obvious agglomerate.Metallic nano lubricating additives: Add 0.1 ~ 0. 5% to lubricating oil ... produce average particle size 20-300 nm of different specifications nano or micron tin powder, also can produce other size according ...