Macro Stone applies fiberglass rod(made from imported Glass and Epoxy Resin by pultrusion) to composite insulators for higher electrical and mechanical performance. FRP Rod is used in composite insulators below 66kV, ECR Rod is used in composite insulators above 66kV.

The sheds are made from high quality HTV silicone rubber, using high pressure injection molding techniques to create a smooth surface. The weather sheds have excellent weather ability, high mechanical strength, anti-tracking, excellent corona resistance, pollution resistance, and surface erosion resistance as well as superiorHydrophobicity performance.

There are a range of end fittings made of steel, ductile iron or aluminium. They are directly crimped to the ECR core rod by a circumferential crimping process, which utilizes the rod's inherent tensile strength to achieve better performance.

Our suspension insulators feature high leakage distance for maximum resistance to contamination and leakage currents in various environmental applications.

All suspension insulators are manufactured and tested in strict accordance with lEC 61109 and lEC 62217 along with execution of ISO 900l to guarantee quality.