In addition to 1000 mm tunnel jet fans, a shaft fan with 1800 mm diameter was sold for use in the 2.6 km long Salang Tunnel connecting the north and south of Afghanistan.
In addition to 1000 mm tunnel jet fans, a shaft fan with 1800 mm diameter was sold for use in the 2.6 km long Salang Tunnel connecting the north and south of Afghanistan.
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