Guarantor Disclosures

The Company's payment obligations under the 3.60% Notes Due 2022 are fully and unconditionally guaranteed by each of its current and future domestic subsidiaries that guarantee other debt of the Company or of another guarantor of the 3.60% Notes Due 2022 in excess of $5,000 (the "Guarantor Subsidiaries"). Each Guarantor Subsidiary is 100% owned by Westlake Chemical Corporation. These guarantees are the joint and several obligations of the Guarantor Subsidiaries. The following condensed consolidating financial information presents the financial condition, results of operations and cash flows of Westlake Chemical Corporation, the Guarantor Subsidiaries and the remaining subsidiaries that do not guarantee the 3.60% Notes Due 2022 (the "Non-Guarantor Subsidiaries"), together with consolidating adjustments necessary to present the Company's results on a consolidated basis.

Condensed Consolidating Financial Information as of December 31, 2012



	Westlake Chemical Corporation		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	753,881	$	6,973	$	29,224	$	—		$	790,078
Marketable securities	124,873		—		—		—			124,873
Accounts receivable, net	7,933		1,675,274		2,959		(1,286,007		)	400,159
Inventories	—		385,140		14,158		—			399,298
Prepaid expenses and other current assets	389		11,386		2,925		—			14,700
Deferred income taxes	431		21,581		293		—			22,305
Total current assets	887,507		2,100,354		49,559		(1,286,007		)	1,751,413
Property, plant and equipment, net	—		1,502,902		7,146		—			1,510,048
Equity investments	3,018,926		65,448		32,923		(3,073,561		)	43,736
Other assets, net	17,033		94,678		1,252		(5,964		)	106,999
Total assets	$	3,923,466	$	3,763,382	$	90,880	$	(4,365,532	)	$	3,412,196
Current liabilities
Accounts payable	$	1,285,530	$	192,443	$	13,969	$	(1,274,892	)	$	217,050
Accrued liabilities	12,808		178,915		852		(11,115		)	181,460
Total current liabilities	1,298,338		371,358		14,821		(1,286,007		)	398,510
Long-term debt	752,872		10,889		—		—			763,761
Deferred income taxes	—		331,320		934		(5,964		)	326,290
Other liabilities	—		51,312		67		—			51,379
Stockholders' equity	1,872,256		2,998,503		75,058		(3,073,561		)	1,872,256
Total liabilities and stockholders' equity	$	3,923,466	$	3,763,382	$	90,880	$	(4,365,532	)	$	3,412,196

Condensed Consolidating Financial Information as of December 31, 2011



	Westlake Chemical Corporation		Guarantor Subsidiaries		Non-Guarantor Subsidiaries		Eliminations			Consolidated
Balance Sheet
Current assets
Cash and cash equivalents	$	803,320	$	2,517	$	20,064	$	—		$	825,901
Accounts receivable, net	—		1,384,705		949		(978,282		)	407,372
Inventories	—		478,229		12,548		—			490,777
Prepaid expenses and other current assets	363		10,332		1,800		—			12,495
Deferred income taxes	430		19,049		132		—			19,611
Total current assets	804,113		1,894,832		35,493		(978,282		)	1,756,156
Property, plant and equipment, net	—		1,223,073		8,993		—			1,232,066
Equity investments	2,597,598		53,912		35,650		(2,640,419		)	46,741
Restricted cash	96,283		—		—		—			96,283
Other assets, net	17,650		132,968		2,467		(17,510		)	135,575
Total assets	$	3,515,644	$	3,304,785	$	82,603	$	(3,636,211	)	$	3,266,821
Current liabilities
Accounts payable	$	1,005,529	$	210,476	$	3,748	$	(992,719	)	$	227,034
Accrued liabilities	76		120,656		2,392		14,437			137,561
Total current liabilities	1,005,605		331,132		6,140		(978,282		)	364,595
Long-term debt	753,674		10,889		11,500		(11,500		)	764,563
Deferred income taxes	—		336,165		636		(6,010		)	330,791
Other liabilities	53		50,458		49		—			50,560
Stockholders' equity	1,756,312		2,576,141		64,278		(2,640,419		)	1,756,312
Total liabilities and stockholders' equity	$	3,515,644	$	3,304,785	$	82,603	$	(3,636,211	)	$	3,266,821

Condensed Consolidating Financial Information for the Year Ended December 31, 2012



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	3,529,685		$	48,205		$	(6,849	)	$	3,571,041
Cost of sales	—			2,799,537			41,393			(6,849		)	2,834,081
Gross profit	—			730,148			6,812			—			736,960
Selling, general and administrative expenses	2,004			113,133			6,472			—			121,609
(Loss) income from operations	(2,004		)	617,015			340			—			615,351
Interest expense	(42,989		)	(60		)	—			—			(43,049		)
Debt retirement costs	(7,082		)	—			—			—			(7,082		)
Gain from sales of equity securities	1			16,428			—			—			16,429
Other income (expense), net	28,171			(21,384		)	(3,267		)	—			3,520
(Loss) income before income taxes	(23,903		)	611,999			(2,927		)	—			585,169
Provision for (benefit from) income taxes	1,825			199,057			(1,268		)	—			199,614
Equity in net income of subsidiaries	411,283			—			—			(411,283		)	—
Net income (loss)	$	385,555		$	412,942		$	(1,659	)	$	(411,283	)	$	385,555
Comprehensive income (loss)	$	383,785		$	410,549		$	(1,036	)	$	(409,513	)	$	383,785

Condensed Consolidating Financial Information for the Year Ended December 31, 2011



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	3,581,470		$	42,202		$	(3,824	)	$	3,619,848
Cost of sales	—			3,024,419			40,247			(3,824		)	3,060,842
Gross profit	—			557,051			1,955			—			559,006
Selling, general and administrative expenses	3,762			102,989			5,459			—			112,210
(Loss) income from operations	(3,762		)	454,062			(3,504		)	—			446,796
Interest expense	(50,919		)	(73		)	—			—			(50,992		)
Other income (expense), net	10,217			(4,212		)	(377		)	—			5,628
(Loss) income before income taxes	(44,464		)	449,777			(3,881		)	—			401,432
(Benefit from) provision for income taxes	(11,835		)	155,313			(1,012		)	—			142,466
Equity in net income of subsidiaries	291,595			—			—			(291,595		)	—
Net income (loss)	$	258,966		$	294,464		$	(2,869	)	$	(291,595	)	$	258,966
Comprehensive income (loss)	$	256,929		$	292,834		$	(3,276	)	$	(289,558	)	$	256,929

Condensed Consolidating Financial Information for the Year Ended December 31, 2010



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non-Guarantor Subsidiaries		Eliminations			Consolidated
Statement of Operations
Net sales	$	—		$	3,130,513		$	44,006	$	(2,732	)	$	3,171,787
Cost of sales	—			2,653,234			38,602		(2,732		)	2,689,104
Gross profit	—			477,279			5,404		—			482,683
Selling, general and administrative expenses	4,257			95,441			4,621		—			104,319
(Loss) income from operations	(4,257		)	381,838			783		—			378,364
Interest expense	(39,829		)	(46		)	—		—			(39,875		)
Other income (expense), net	15,045			(12,715		)	2,141		—			4,471
(Loss) income before income taxes	(29,041		)	369,077			2,924		—			342,960
(Benefit from) provision for income taxes	(2,471		)	122,541			1,497		—			121,567
Equity in net income of subsidiaries	247,963			—			—		(247,963		)	—
Net income	$	221,393		$	246,536		$	1,427	$	(247,963	)	$	221,393
Comprehensive income	$	225,865		$	250,064		$	2,371	$	(252,435	)	$	225,865

Condensed Consolidating Financial Information for the Year Ended December 31, 2012



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income (loss)	$	385,555		$	412,942		$	(1,659	)	$	(411,283	)	$	385,555
Adjustments to reconcile net income (loss) to net cash (used for) provided by operating activities
Depreciation and amortization	1,514			141,388			3,153			—			146,055
Deferred income taxes	45			(5,962		)	124			—			(5,793		)
Net changes in working capital and other	(410,232		)	94,930			2,256			411,283			98,237
Net cash (used for) provided by operating activities	(23,118		)	643,298			3,874			—			624,054
Cash flows from investing activities
Additions to property, plant and equipment	—			(385,919		)	(963		)	—			(386,882		)
Construction of assets pending sale-leaseback	—			(4,308		)	—			—			(4,308		)
Proceeds from disposition of assets	—			449			22			—			471
Proceeds from repayment of loan to affiliate	—			—			1,192			—			1,192
Proceeds from sale-leaseback of assets	—			2,304			—			—			2,304
Proceeds from sales of equity securities	3			47,652			—			—			47,655
Purchase of securities	(124,873		)	(2,961		)	—			—			(127,834		)
Settlements of derivative instruments	—			431			—			—			431
Net cash (used for) provided by investing activities	(124,870		)	(342,352		)	251			—			(466,971		)
Cash flows from financing activities
Intercompany financing	291,455			(296,490		)	5,035			—			—
Capitalized debt issuance costs	(2,221		)	—			—			—			(2,221		)
Dividends paid	(285,521		)	—			—			—			(285,521		)
Proceeds from debt issuance	248,818			—			—			—			248,818
Proceeds from exercise of stock options	10,369			—			—			—			10,369
Repayment of debt	(250,000		)	—			—			—			(250,000		)
Repurchase of common stock for treasury	(10,784		)	—			—			—			(10,784		)
Utilization of restricted cash	96,433			—			—			—			96,433
Net cash provided by (used for) financing activities	98,549			(296,490		)	5,035			—			(192,906		)
Net (decrease) increase in cash and cash equivalents	(49,439		)	4,456			9,160			—			(35,823		)
Cash and cash equivalents at beginning of the year	803,320			2,517			20,064			—			825,901
Cash and cash equivalents at end of the year	$	753,881		$	6,973		$	29,224		$	—		$	790,078

Condensed Consolidating Financial Information for the Year Ended December 31, 2011



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income (loss)	$	258,966		$	294,464		$	(2,869	)	$	(291,595	)	$	258,966
Adjustments to reconcile net income (loss) to net cash (used for) provided by operating activities
Depreciation and amortization	1,683			127,807			3,590			—			133,080
Deferred income taxes	190			14,225			(301		)	—			14,114
Net changes in working capital and other	(291,666		)	(45,667		)	1,874			291,595			(43,864		)
Net cash (used for) provided by operating activities	(30,827		)	390,829			2,294			—			362,296
Cash flows from investing activities
Additions to property, plant and equipment	—			(175,706		)	(1,137		)	—			(176,843		)
Proceeds from disposition of assets	—			2,877			3			—			2,880
Proceeds from repayment of loan to affiliate	—			—			1,192			—			1,192
Purchase of securities and other investments	—			(30,265		)	—			—			(30,265		)
Settlements of derivative instruments	—			251			—			—			251
Net cash (used for) provided by investing activities	—			(202,843		)	58			—			(202,785		)
Cash flows from financing activities
Intercompany financing	186,898			(185,522		)	(1,376		)	—			—
Capitalized debt issuance costs	(2,697		)	—			—			—			(2,697		)
Dividends paid	(18,265		)	—			—			—			(18,265		)
Proceeds from exercise of stock options	5,344			—			—			—			5,344
Repurchase of common stock for treasury	(2,518		)	—			—			—			(2,518		)
Utilization of restricted cash	54,227			—			—			—			54,227
Net cash provided by (used for) financing activities	222,989			(185,522		)	(1,376		)	—			36,091
Net increase in cash and cash equivalents	192,162			2,464			976			—			195,602
Cash and cash equivalents at beginning of the year	611,158			53			19,088			—			630,299
Cash and cash equivalents at end of the year	$	803,320		$	2,517		$	20,064		$	—		$	825,901

Condensed Consolidating Financial Information for the Year Ended December 31, 2010



	Westlake Chemical Corporation			Guarantor Subsidiaries			Non-Guarantor Subsidiaries			Eliminations			Consolidated
Statement of Cash Flows
Cash flows from operating activities
Net income	$	221,393		$	246,536		$	1,427		$	(247,963	)	$	221,393
Adjustments to reconcile net income to net cash (used for) provided by operating activities
Depreciation and amortization	2,154			125,002			3,730			—			130,886
Deferred income taxes	7,864			6,048			241			—			14,153
Net changes in working capital and other	(245,113		)	(87,299		)	1,301			247,963			(83,148		)
Net cash (used for) provided by operating activities	(13,702		)	290,287			6,699			—			283,284
Cash flows from investing activities
Additions to equity investments	—			(10,177		)	—			—			(10,177		)
Additions to property, plant and equipment	—			(79,928		)	(1,341		)	—			(81,269		)
Proceeds from disposition of assets	—			914			—			—			914
Proceeds from repayment of loan to affiliate	—			—			763			—			763
Settlements of derivative instruments	—			9,494			—			—			9,494
Net cash used for investing activities	—			(79,697		)	(578		)	—			(80,275		)
Cash flows from financing activities
Intercompany financing	210,360			(210,614		)	254			—			—
Capitalized debt issuance costs	(3,331		)	—			—			—			(3,331		)
Dividends paid	(16,014		)	—			—			—			(16,014		)
Proceeds from exercise of stock options	3,745			—			—			—			3,745
Utilization of restricted cash	197,298			—			—			—			197,298
Net cash provided by (used for) financing activities	392,058			(210,614		)	254			—			181,698
Net increase (decrease) in cash and cash equivalents	378,356			(24		)	6,375			—			384,707
Cash and cash equivalents at beginning of the year	232,802			77			12,713			—			245,592
Cash and cash equivalents at end of the year	$	611,158		$	53		$	19,088		$	—		$	630,299