 HOUSTON--BUSINESS WIRE--Westlake Chemical Partners LP NYSE: WLKP the Partnership announced that it filed its Annual Report on Form 10-K for the fiscal year ended December 31, 2020 with the Securities and Exchange Commission on March 2, 2021. A copy of this 10-K may be found on the Partnerships website, by selecting the Investor Relations tab, then SEC 10-K Filings. Unitholders of the Partnership may receive a hard copy of its Annual Report on Form 10-K, includi 