Electroporcelana Gamma S.A.S.

Colombia

Norsk Teknisk Porselen Products

Norway

LAPP Insulators GmbH

Germany

Aditya Birla Power Composite Limited (ABPCL)

India

PFISTERER

Germany

Aditya Birla Insulators (A Unit of Grasim Industries Ltd)

India

Newell-PSN (A Power Grid Components Inc. Company)

United States

Zapel S.A.

Poland

Meister International

USA

Allied Insulators

United Kingdom

Modern Insulators

India

Hivolt Power System

China