Insulators & Electricals Company (Prop. Hindusthan Urban Infrastructure Ltd.)
India
Modern Insulators
Allied Insulators
United Kingdom
Changsha Guoli Electric Equipments
China
LAPP Insulators GmbH
Germany
Newell (A PGC Company)
United States
Zapel S.A.
Poland
Hunan Yangdong Porcelain Insulators
PPC Insulators
Austria
Dalian Insulator Group T&D Co., Ltd
PFISTERER
DALEKOVOD OSO
Croatia
Pingxiang Huaci Insulators Group Co. Ltd.
Hivolt Power System
Norsk Teknisk Porselen Products AS
Norway
EMCO Industries
Pakistan
Electroporcelana Gamma S.A.S.
Colombia
Nanjing Electric Insulator Co.,Ltd
CHINA
