Dear all , 

Catex exchange will support the upcoming Ethereum Istanbul upgrade. Deposits and withdrawals of ETH will be suspended prior to the ETH network block height of 9069000 selected to execute the upgrade, estimated to occur on 2019/12/07. 

Please note that trading of ETH will not be affected during the upgrade 

For more details, please visit here.

https://blog.ethereum.org/2019/11/20/ethereum-istanbul-upgrade-announcement/

Thanks