Wenzhou Yikun Electric

China

PPC Insulators

Austria

Zhejiang Gaoneng Electric Installation Co., Ltd.

China

Newell (A PGC Company)

United States

Zapel S.A.

Poland

Reinhausen Power Composites

Germany

PFISTERER

Germany

Dalian CTC Insulator Company Limited

China

Indisol S.A.

Portugal

Izoelektro d.o.o.

Slovenia

MacLean Power Systems

United States

Wish Power (Thailand) Co. Ltd

Thailand