EXHIBIT 99.1 JOINT FILING AGREEMENT
Pursuant to Rule 13d-1(k)(1)(iii) of the Securities Exchange Act of 1934, each of the undersigned agrees that a single joint Schedule 13G/A and any further amendments thereto may be filed on behalf of each of the undersigned with respect to the common units held by each of them in Westlake Chemical Partners LP.
Dated: February 6, 2019.
| WPT LLC | ||
| By: | /s/ Albert Chao | |
| Name: | Albert Chao | |
| Title: | President of Westlake Chemical Investments, Its manager | |
| WESTLAKE POLYMERS LLC | ||
| By: | /s/ Albert Chao | |
| Name: | Albert Chao | |
| Title: | President of Westlake Chemical Investments, Its manager | |
| WESTLAKE CHEMICAL INVESTMENTS, INC. | ||
| By: | /s/ Albert Chao | |
| Name: | Albert Chao | |
| Title: | President | |
| WESTLAKE OLEFINS LLC | ||
| By: | /s/ Albert Chao | |
| Name: | Albert Chao | |
| Title: | President | |
| WESTLAKE CHEMICAL CORPORATION | ||
| By: | /s/ Albert Chao | |
| Name: | Albert Chao | |
| Title: | President and CEO | |
[Signature Page—Schedule 13G Joint Filing Agreement]