MAGNESITA REFRATÁRIOS S.A.

TAXPAYER ID (CNPJ/MF) NO. 08.684.547/0001-65

PUBLICLY-HELD COMPANY

NOTICE TO THE MARKET

São Paulo, December 8th, 2017 - Magnesita Refratários S.A. (Novo Mercado: MAGG3) ("Company") informs its shareholders and the market in general that, at a meeting held on this date, the Board of Directors approved the termination of the Company's American Depositary Receipts (ADRs) Level I Program ("ADR Program") registered with the Comissão de Valores Mobiliários (the Brazilian Securities and Exchange Commission), established with Deutsche Bank Trust Company America (Custodian Bank). The Board of Directors authorized the Company's Executive Officers to take all necessary steps to terminate the ADR Program.

The Company will maintain the market and its shareholders informed of relevant subsequent events related to the termination of the ADR Program.

Otavio Augusto Castro Lustosa Nogueira

CFO and Investor Relations Officer

Magnesita Refratários S.A.

CLASSIFICAÇÃO DO DOCUMENTO: PÚBLICO

Magnesita Refratários SA published this content on 08 December 2017 and is solely responsible for the information contained herein.
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