| Form: | S-4 |
| CIK: | 0001262823 | | Company Name: | WESTLAKE CHEMICAL CORP | | File Number: | 333-216662 |
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| CIK: | 0001432145 | | Company Name: | Westech Building Products (Evansville) LLC | | File Number: | 333-216662-38 |
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| CIK: | 0001700350 | | Company Name: | Royal Building Products (USA) Inc. | | File Number: | 333-216662-37 |
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| CIK: | 0001262842 | | Company Name: | WESTLAKE OLEFINS CORP | | File Number: | 333-216662-36 |
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| CIK: | 0001264129 | | Company Name: | WESTLAKE VINYLS, INC. | | File Number: | 333-216662-35 |
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| CIK: | 0001262845 | | Company Name: | WESTLAKE POLYMERS LLC | | File Number: | 333-216662-34 |
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| CIK: | 0001262846 | | Company Name: | WESTLAKE PVC CORP | | File Number: | 333-216662-33 |
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| CIK: | 0001262847 | | Company Name: | WESTLAKE RESOURCES CORP | | File Number: | 333-216662-32 |
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| CIK: | 0001262849 | | Company Name: | WESTLAKE STYRENE LLC | | File Number: | 333-216662-31 |
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| CIK: | 0001323939 | | Company Name: | WESTLAKE SUPPLY & TRADING CO | | File Number: | 333-216662-30 |
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| CIK: | 0001262850 | | Company Name: | WESTLAKE VINYL CORP | | File Number: | 333-216662-29 |
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| CIK: | 0001263828 | | Company Name: | WESTLAKE VINYLS CO LP | | File Number: | 333-216662-28 |
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| CIK: | 0001397319 | | Company Name: | Royal Plastics Group (USA) Ltd | | File Number: | 333-216662-27 |
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| CIK: | 0001262844 | | Company Name: | WESTLAKE PETROCHEMICALS LLC | | File Number: | 333-216662-25 |
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| CIK: | 0001585784 | | Company Name: | North American Specialty Products LLC | | File Number: | 333-216662-24 |
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| CIK: | 0000805264 | | Company Name: | AXIALL CORP/DE/ | | File Number: | 333-216662-22 |
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| CIK: | 0001603074 | | Company Name: | Axiall Holdco, Inc. | | File Number: | 333-216662-21 |
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| CIK: | 0001262824 | | Company Name: | GEISMAR HOLDINGS, INC. | | File Number: | 333-216662-20 |
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| CIK: | 0001262834 | | Company Name: | WESTLAKE CHEMICAL INVESTMENTS, INC. | | File Number: | 333-216662-18 |
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| CIK: | 0001530955 | | Company Name: | Westlake Pipeline Investments LLC | | File Number: | 333-216662-17 |
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| CIK: | 0001344936 | | Company Name: | Westlake NG I CORP | | File Number: | 333-216662-16 |
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| CIK: | 0001262841 | | Company Name: | WESTLAKE MANAGEMENT SERVICES, INC. | | File Number: | 333-216662-15 |
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| CIK: | 0001344938 | | Company Name: | Westlake Longview Corp | | File Number: | 333-216662-14 |
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| CIK: | 0001432144 | | Company Name: | Westlake Geismar Power Co LLC | | File Number: | 333-216662-13 |
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| CIK: | 0001603077 | | Company Name: | Eagle Natrium LLC | | File Number: | 333-216662-12 |
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| CIK: | 0001685770 | | Company Name: | Axiall Noteco, Inc. | | File Number: | 333-216662-11 |
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| CIK: | 0001602862 | | Company Name: | Axiall Ohio, Inc. | | File Number: | 333-216662-10 |
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| CIK: | 0001603075 | | Company Name: | Eagle Holdco 3 LLC | | File Number: | 333-216662-08 |
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| CIK: | 0001397322 | | Company Name: | Rome Delaware CORP | | File Number: | 333-216662-07 |
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| CIK: | 0001397321 | | Company Name: | Plastic Trends, Inc | | File Number: | 333-216662-06 |
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| CIK: | 0001603083 | | Company Name: | PHH Monomers, L.L.C. | | File Number: | 333-216662-05 |
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| CIK: | 0001397325 | | Company Name: | Georgia Gulf Lake Charles, LLC | | File Number: | 333-216662-04 |
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| CIK: | 0001603079 | | Company Name: | Eagle US 2 LLC | | File Number: | 333-216662-03 |
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| CIK: | 0001556389 | | Company Name: | EAGLE SPINCO INC. | | File Number: | 333-216662-02 |
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| CIK: | 0001602981 | | Company Name: | Eagle Pipeline, Inc. | | File Number: | 333-216662-01 |
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