Norsk Teknisk Porselen Products AS

Norway

TID Technology Development Co. Ltd.

China

EC Insulator Jiangxi Co., Ltd.

China

Pingxiang Huaci Insulators Group Co. Ltd.

China

Wenzhou Yikun Electric

China

Indisol S.A.

Portugal

PLP

USA

Mekufa

Netherlands

Sediver

France

LAPP Insulators GmbH

Germany

Zapel S.A.

Poland

Izoelektro d.o.o.

Slovenia