The “faulty ass” slurry leaks into zero black technology, using the dual-insurance design “hyp + slope flow”, and when the tail lifts 45° dumps the sludge, the high molecular impermeable coating is synchronized with double-sealed glue, even if 80% of the water-bearing sludge is transported. A sanitation company in guangzhou measured vehicles operating for three consecutive months and zero complaints of ground pollution. “ass” slurry dumps, one car is overcosted, modularized box designs support the rapid replacement of fittings, early peaks of slurry, collection of household garbage at noon, cleaning of building waste at nighttimes, and three single-day rotations. User feedback reduced combined operating costs by 40 per cent and attendance increased by 60 per cent。











