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keez movie,When carrying out underground contstruction (primarily infrastructure tunnels for electricity, water, gas and railways) in cities with a lot of groundwater, such as those in Japan, groundwater is frozen to harden the soil. This is an environmentally-friendly method where the frozen soil is thawed after construction, allowing the ground to be restored to its natural state without leaving any waste materials behind.

oldersex,By incorporating natural refrigerant cooling systems that do not contribute to ozone depletion and global warming in the technology’s freezing process, progress toward systems that further contribute to reducing global environmental impact can be achieved.

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