Third Quarter 2017 Earnings Results Conference Call Invitation

October 5, 2017

Mexichem S.A.B. de C.V. (BMV: Mexchem*), a worldwide leader in plastic pipes and chemicals, will release its Third Quarter 2017 Earnings Results after the market closes on Wednesday, October 25, 2017.

Management will host a Conference Call on Thursday, October 26, 2017 to review results and operations from the quarter.

When dialing in, please let the operator know you are here for the Mexichem earnings call. The details for the conference call are as follows:

Thursday, October 26, 2017

Time:

10:00 a.m. (Mexico City Time)

11:00 a.m. (US Eastern Time)

Speakers:

Antonio Carrillo Rule, CEO

Rodrigo Guzman Perera, CFO

Fabiola Molina del Valle, Investor Relations Officer

To participate in the conference call please dial:

Domestic US: 1-888-349-0106

International: +1-412-902-0131

Domestic Mexico: 001-855-817-7630

Participants are requested to connect 10 minutes prior to start time.

The webcast archive will be available approximately two hours after the end of the call through January 26, 2018. The archive can also be accessed via the following link:

http://services.choruscall.com/links/mexichem171026.html