China Railway Engineering Equipment Group (CREG) Tunnel Boring Machine is for boring the tunnels of line 2 expansion between the Vila Prudente and Penha stations. The TBM has a diameter of 11.66 meters. It will bore 7.5 km of tunnels in the extent of the 2-green line to a depth up to 41 meters.
https://noticiando.net/tatuzao-da-linha-2-verde-chega-ao-porto-de-santos/
cover tunnel photo by: Matt Brown from London, England / CC BY
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CREG is good.