For the last 30 years. And it's my understanding, to the best of my knowledge, that today concrete slabs are being used for the construction of high-speed rail for the bullet trains.
Vice-President, Industry Affairs, Cement Association of Canada
For the last 30 years. And it's my understanding, to the best of my knowledge, that today concrete slabs are being used for the construction of high-speed rail for the bullet trains.
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