THE CORPORATE LIBRARY

Related Party Transactions and Outside Related Director Information

Preformed Line Products Company (PLPC)

3/15/2006 Proxy Information

The Company is a sponsor of Ruhlman Motorsports. Ruhlman Motorsports is owned by Randall M. Ruhlman, a director of the Company, and by his wife. The Company paid sponsorship fees of $658,000, annually, to Ruhlman Motorsports during 2003, 2004 and 2005. In addition, in 2003, 2004, and 2005 the Company’s Canadian subsidiary, Preformed Line Products (Canada) Ltd., paid $99,000, $106,000, and $101,000, respectively, to Ruhlman Motorsports in sponsorship fees. This sponsorship provides the Company with a unique venue to entertain the Company’s customers and to advertise on the racecar, which participates on the Trans-Am racing circuit. The Company believes that its sponsorship contract with Ruhlman Motorsports is as favorable to the Company as a similar contract with a similar independent third-party racing team would be. The Company intends to continue to sponsor Ruhlman Motorsports in 2006; however, it will be in the Grand American Road Racing Series, because the Trans-Am racing circuit has dissolved. The Company further believes that the sponsorship has great marketing value because it entertains users of the Company’s products, such as linemen and their supervisors, and thus provides a grassroots sales approach.

Mr. John D. Drinko, one of the Company’s directors, is a senior partner of Baker & Hostetler LLP, which acts as the Company’s general outside counsel. The Company expects that Baker & Hostetler will continue to provide legal services in that capacity in 2006.

3/24/2005 Proxy Information

Barbara P. Ruhlman is the mother of Randall M. Ruhlman and Robert G. Ruhlman.

The Audit Committee has approved all related party transactions.

The Company is a sponsor of Ruhlman Motorsports. Ruhlman Motorsports is owned by Randall M. Ruhlman, a director of the Company, and by his wife. The Company paid sponsorship fees of $658,000, annually, to Ruhlman Motorsports during 2002, 2003 and 2004. In addition, in 2002, 2003, and 2004 the Company’s Canadian subsidiary, Preformed Line Products (Canada) Ltd., paid $159,000, $99,000, and $106,000, respectively, to Ruhlman Motorsports in sponsorship fees. This sponsorship provides the Company with a unique venue to entertain the Company’s customers and to advertise on the racecar, which participates on the Trans-Am racing circuit. The Company believes that its sponsorship contract with Ruhlman Motorsports is as favorable to the Company as a similar contract with a similar independent third-party racing team would be. The Company and Preformed Line Products (Canada) Ltd. intend to continue to sponsor Ruhlman Motorsports in 2005. The Company further believes that the sponsorship has great marketing value because it entertains users of the Company’s products, such as linemen and their supervisors, and thus provides a grassroots sales approach.

Mr. John D. Drinko, one of the Company’s directors, is a senior partner of Baker & Hostetler LLP, which acts as our general outside counsel. The Company expects that Baker & Hostetler will continue to provide legal services in that capacity in 2005.