Attached files
EXHIBIT 21
SUBSIDIARIES OF WESTLAKE *
| Name of Subsidiary |
State or Other Jurisdiction of Incorporation or Organization |
Names Doing Business | ||
| North American Pipe Corporation |
Delaware | North American Pipe Corporation and NAPCO | ||
| Van Buren Pipe Corporation |
Delaware | Van Buren Pipe Corporation | ||
| Westech Building Products, Inc. |
Delaware | Westech Building Products, Inc. | ||
| Westech Building Products ULC |
Canada | Westech Building Products ULC and Westech Building Products Limited | ||
| Westlake Ethylene Pipeline Corporation |
Delaware | Westlake Ethylene Pipeline Corporation | ||
| Westlake Longview Corporation |
Delaware | Westlake Longview Corporation | ||
| Westlake Management Services, Inc. |
Delaware | Westlake Management Services, Inc. | ||
| Westlake Petrochemicals LLC |
Delaware | Westlake Petrochemicals LLC, Westlake Petrochemicals LP and WPE | ||
| Westlake Polymers LLC |
Delaware | Westlake Polymers LLC, Westlake Polymers LP and WPE | ||
| Westlake PVC Corporation |
Delaware | Westlake PVC Corporation | ||
| Westlake Styrene LLC |
Delaware | Westlake Styrene LLC and Westlake Styrene LP | ||
| Westlake Supply and Trading Company |
Delaware | Westlake Supply and Trading Company | ||
| Westlake Vinyls Company LP |
Delaware | Westlake Vinyls Company LP | ||
| Westlake Vinyls, Inc. |
Delaware | Westlake Vinyls, Inc., Westlake Monomers and WCAO | ||
| WPT LLC |
Delaware | WPT LLC and WPT LP | ||
| Suzhou Huasu Plastics Co., Ltd. ** |
People’s Republic of China | Suzhou Huasu Plastics Co., Ltd. and Huasu | ||
| * | Westlake has elected to omit the names of certain subsidiaries. None of the omitted subsidiaries, considered either alone or together with the other omitted subsidiaries of its immediate parent, constitutes a “Significant Subsidiary” as set forth in Section 601(b)(21) of Regulation S-K. |
| ** | Westlake owns 59% of this entity but accounts for it using the equity method. |