1.Standard:IEC,ANSI,GB and etc. 2.It is usually red,gry and white 3.We can design and produce according to the drawings. 1.Standard:IEC,ANSI,GB and etc.2.It is usually red,gry and white3.We can design and produce according to the drawingsPost Composite Insulator is applicable for power plant installation with good performances in hydrophobicity,aging resistance,creepage tracking resistance, ...