Comment on "World Tunnel Congress 2020 Kuala Lumpur - WTC2020"
... Maybe just upgrading your tunnel lighting to the next generation LED strip to improve the quality...idt@tunnelsupplies.com #TBM #NATM #Tunnel #Tunnels #Tunnelling #LED #LEDLightning #LEDLights #LED...
cover tunnel photo by: Matt Brown from London, England / CC BY
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