Specifications:  
1) JG-1 ceramic foam filter 
    a) White color with applied temperature: ≦1,200oC 
        and  AL2O3:≧65%
    b) Typically used in molten aluminum and alloy filtering
2) JG-2 Ceramic foam filter
    a) Gray-black color with applied temperature: ≦1,500oC 
        and  SiC≧50% content
    b) Typically used in molten Iron and alloy filtering
3) JG-3 ceramic foam filter
    a) Yellow color with applied temperature: ≦1,700oC 
        and ZrO3≧70% content
    b) Typically used in molten stainless steel, alloy and other metal 
        in precision molding