Must be the most expensive clay brick ever made.
4 kW industrial strength vacuum cleaner operated for 400 hours - 1,600 kWh. Average electricity price in Beijing about US$0.13 per kWh. Cost to collect "dust and smog" raw materials for 1 brick = US$208!
Maybe the Nut Man should sell these bricks to Trump for his silly wall.
I realise I've totally missed the point of this silly exercise but I'm bored - apologies. Back to the cave. Cheers.
Must be the most expensive clay brick ever made. 4 kW industrial...
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