This composting unit of the European leader in recovery of industrial sludges, sewage sludges and mineral by-products, uses organic wastes collected from individuals and biosolids as resources for creating compost. Developed to cope with the most severe constraints in intensive environments, the frames and mechanisms of these high-performance doors are more resistant to corrosion than 316L stainless steel which makes them entirely suited to the corrosive gas emissions from composting.