PS Ball is an abbreviation of Precious Slag Ball, an innovative material that can be produced by rapid cooling of slag which generated from steel making process by means of our own Slag Atomizing Technology (SAT). PS Ball is an environment-friendly material proved by Ministry of Environment. It has superior characteristics compared to sand or copper slag in its compressive strength, hardness and anti-weathering. Reuse of waste (steel slag) into environment-friendly material Various Applications (Physical & Chemical Properties) Prevent Pollution (Received official letter from Ministry of Environment) Superior to sand or Copper Slag on compressive strength, hardness New sources of Environment Technology in 21st century 1.5 MT Jumbo bags