Rotary Klin Biophosko® RKM-1000L with the dimensions ( Height= 190 cm, width= 155 cm, Weight= 750 Kg and length= 290 cm) made of metal and fiber resin and others aeration tools. Rotary composter is a perfect solution to overcome communal trash problem at the city that dominated by organic trash such as traditional market trash, restaurant, hotel, and also domestic' s trash that comes from households within one RW ( administrative unit at the next-to-lowest level in city, consisting of several RTs) or even a few RWs or public residence/ estate. Organic trash categories ( degradationable) including food remnants, papper, residu of fish bone, fruit peel, pieces of vegetables, etc) . Convert organic trashes into something usefull- which is compost- that' ll usefull to maintenance the fertile of the soil and as nutrient supllier to the plants around the environments like the public' s resident, hotel, restaurant, public' s environment, etc. Compost can also sells commercially to farmers, garden owners, to everyone who has hobbies in plantation, florist and gardening.