TAC Corporation, in pursuit of happiness of all employees, and pursuing zero subsidence in all Shield construction projects.

TAC Corporation

ETAC Construction Method

ETAC Construction Method

System Flow

1. In 2000, we developed the ETAC Method which makes it possible to use two-liquid plastic backfill grout material with a simple type injection pipe. Two-liquid plastic-type backfill grout injection has a high effect on suppressing subsidence in the ground.

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TAC Corporation