Exhibit 99.1

For immediate release	Eric R. Graef
March 12, 2009	Preformed Line Products
	(440) 473-9249

PREFORMED LINE PRODUCTS ANNOUNCES FINANCIAL RESULTS
FOR THE FOURTH QUARTER AND FULL YEAR 2008

• Record 2008 sales of $269.7 million increased 16%

• Net income increased 24% for the year 2008

• Fourth quarter net income increased 49%

Mayfield Village, Ohio, March 12, 2009 — Preformed Line Products Company (Nasdaq: PLPC) today reported financial results for the fourth quarter and the full year 2008.

Net income for the quarter ended December 31, 2008 increased to $2,761,000, or $.52 per diluted share, compared to $1,851,000, or $.34 per diluted share, for the comparable period in 2007. Net sales in the fourth quarter of 2008 were $60,563,000 compared to $62,825,000 in the fourth quarter of 2007. Currency exchange rates had a negative impact on 2008 fourth quarter sales of $5,564,000 and on net income of $524,000.

Net income for the year ended December 31, 2008 increased 24% to $17,623,000, or $3.30 per diluted share, compared to $14,159,000, or $2.61 per diluted share in 2007. Net income in 2008 included a net gain of $756,000, or $.14 per diluted share, on the sale of Superior Modular Products Company, a former wholly owned domestic subsidiary. Net sales for 2008 increased 16% to $269,742,000 compared to $233,289,000 in 2007.

Currency exchange rates favorably impacted 2008 sales by $3,457,000, while the impact on 2008 net income was unfavorable by $224,000.

Rob Ruhlman, Chairman and Chief Executive Officer, said, “I am pleased with the achievement of sales growth for the fifth consecutive year including three straight years of record sales. Net income has improved for three consecutive years and our 2008 net income is second only to the dot com boom year of 1998. These improvements resulted from product innovation, improvements in production efficiencies, customer focus and strategy integration implemented over the past several years. We have a strong balance sheet and are positioned to succeed in these uncertain economic times. I cannot predict what 2009 will bring, but I am confident we are prepared for the challenges that lie ahead.”

P.O. Box 91129   |   Cleveland, Ohio 44101   |   440.461.5200   |   www.preformed.com

PAGE 2 / PLP ANNOUNCES FOURTH QUARTER RESULTS

Founded in 1947, Preformed Line Products is an international designer and manufacturer of products and systems employed in the construction and maintenance of overhead and underground networks for energy, communications and broadband network companies.

Preformed’s world headquarters are in Cleveland, Ohio, and the Company operates three domestic manufacturing centers located in Rogers, Arkansas, Albuquerque, New Mexico, and Albemarle, North Carolina. The Company serves its worldwide market through international operations in Australia, Brazil, Canada, China, England, Mexico, New Zealand, Poland, South Africa, Spain and Thailand.

This news release contains “forward-looking statements” within the meaning of Section 27A of the Securities Act of 1933 and Section 21E of the Securities Exchange Act of 1934 regarding the Company, including those statements regarding the Company’s and management’s beliefs and expectations concerning the Company’s future performance or anticipated financial results, among others. Except for historical information, the matters discussed in this release are forward-looking statements that involve risks and uncertainties which may cause results to differ materially from those set forth in those statements. Among other things, factors that could cause actual results to differ materially from those expressed in such forward-looking statements include the strength of the economy and demand for the Company’s products, increases in raw material prices, the Company’s ability to identify, complete and integrate acquisitions for profitable growth, and other factors described under the heading “Forward-Looking Statements” in the Company’s 2007 Annual Report on Form 10-K filed with the SEC on April 7, 2008. The Annual Report on Form 10-K and the Company’s other filings with the SEC can be found on the SEC’s website at http://www.sec.gov. The Company assumes no obligation to update or supplement forward-looking statements that become untrue because of subsequent events.

PREFORMED LINE PRODUCTS COMPANY
STATEMENTS OF CONSOLIDATED OPERATIONS
(UNAUDITED)

In thousands, except per share data	Three month periods ended December 31,						Twelve month periods ended December 31,
	2008			2007			2008			2007
				(restated)
Net sales	$	60,563		$	62,825		$	269,742		$	233,289
Cost of products sold		41,441			43,645			182,475			155,388
GROSS PROFIT		19,122			19,180			87,267			77,901
Costs and expenses
Selling		5,676			6,107			23,555			22,623
General and administrative		7,461			8,417			30,014			26,416
Research and engineering		2,325			2,007			8,870			7,192
Other operating expenses — net		235			197			840			338
Goodwill impairment		—			—			—			199
		15,697			16,728			63,279			56,768
OPERATING INCOME		3,425			2,452			23,988			21,133
Other income (expense)
Interest income		191			283			846			1,088
Interest expense		(129	)		(158	)		(544	)		(595	)
Other income (expense)		274			(283	)		470			(305	)
		336			(158	)		772			188
INCOME BEFORE INCOME TAXES, MINORITY INTERESTS AND DISCONTINUED OPERATIONS		3,761			2,294			24,760			21,321
Income taxes		1,114			663			7,718			7,501
INCOME BEFORE MINORITY INTERESTS AND DISCONTINUED OPERATIONS		2,647			1,631			17,042			13,820
Minority interests, net of tax		(20	)		(30	)		(288	)		(54	)
INCOME FROM CONTINUING OPERATIONS		2,627			1,601			16,754			13,766
Income from discontinued operations, net of tax		134			250			869			393
NET INCOME	$	2,761		$	1,851		$	17,623		$	14,159
Income per share from continuing operations — basic	$	0.50		$	0.30		$	3.17		$	2.57
Income per share from discontinued operations — basic	$	0.03		$	0.04		$	0.17		$	0.07
Total net income per share — basic	$	0.53		$	0.34		$	3.34		$	2.64
Income per share from continuing operations — diluted	$	0.50		$	0.29		$	3.14		$	2.54
Income per share from discontinued operations — diluted	$	0.02		$	0.05		$	0.16		$	0.07
Total net income per share — diluted	$	0.52		$	0.34		$	3.30		$	2.61
Cash dividends declared per share	$	0.20		$	0.20		$	0.80		$	0.80
Weighted-average number of shares outstanding — basic		5,223			5,380			5,279			5,372
Weighted-average number of shares outstanding — diluted		5,306			5,439			5,339			5,416

PREFORMED LINE PRODUCTS COMPANY
CONSOLIDATED BALANCE SHEETS
(UNAUDITED)

	December 31,			December 31,
Thousands of dollars, except share data	2008			2007
ASSETS
Cash and cash equivalents	$	19,869		$	23,392
Accounts receivable, less allowances of $964 ($1,199 in 2007)		36,899			37,002
Inventories — net		48,412			43,788
Deferred income taxes		2,786			2,982
Prepaids and other		4,704			4,098
Current assets of discontinued operations		—			12,188
TOTAL CURRENT ASSETS		112,670			123,450
Property and equipment — net		55,940			58,506
Patents and other intangibles — net		3,858			5,637
Goodwill		5,520			3,928
Deferred income taxes		6,943			3,744
Other assets		5,944			8,601
TOTAL ASSETS	$	190,875		$	203,866
LIABILITIES AND SHAREHOLDERS’ EQUITY
Notes payable to banks	$	3,101		$	4,076
Current portion of long-term debt		494			1,949
Trade accounts payable		14,632			15,178
Accrued compensation and amounts withheld from employees		6,606			6,995
Accrued expenses and other liabilities		10,415			12,254
Current liabilities of discontinued operations		—			1,897
TOTAL CURRENT LIABILITIES		35,248			42,349
Long-term debt, less current portion		2,653			3,010
Other noncurrent liabilities and deferred income taxes		15,973			7,882
Minority interests		736			904
SHAREHOLDERS’ EQUITY
Common shares — $2 par value, 15,000,000 shares authorized, 5,223,830 and 5,380,956 outstanding, net of 551,059 and 378,333 treasury shares at par, respectively		10,448			10,762
Paid in capital		3,704			2,720
Retained earnings		146,624			140,339
Accumulated other comprehensive loss		(24,511	)		(4,100	)
TOTAL SHAREHOLDERS’ EQUITY		136,265			149,721
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$	190,875		$	203,866