Based on the Bidding Documents for Purchasing Railway Passenger Cars and General Technical Specification of Model 25K Railway Passenger Car issued by Ministry of Railway, PRC, TRC developed and manufactured the Model YW25K Air-Conditioned Semi-Cushioned Berth Sleeping Car.The planar arrangement of this car is as follows: vestibules at its both ends; storage room, attendant’s room, electric water boiler, power distribution room and short-corridor at “B” end of the car; two lavatories and washing room at “A” end of the car; 11 open-type semi-cushioned berth sleeping compartments (10 compartments in the car with broadcasting room) and side corridor at the central part.Some advanced technology and subassemblies such as SW-160 bogie, type 104 or F8 electro-pneumatic brake, electronic anti-skid regulator, disc brake, unit brake cylinder are employed. The air-conditioning set is placed on the car roof of “B” end of the car, and the water tank on the car roof of “A” end of the car.Novel materials and design concept is introduced to the most extent for interior decoration. Each compartment has six berths arranged as upper, middle and lower level. The texture of the berth is of fireproof type, and its tone is harmonious with the internal color of the car. There is a tea table in each passenger compartment, and side seat and small-sized tea table along the side corridor. There is a ground lamp under each small-sized tea table as lasting lighting at night.The electric connector is of large power type widely used in railway passenger cars. Power is supplied via two circuits. Tightly sealed gangway diaphragm or rubber diaphragm is employed. Air is supplied for brake system via two pipes. The external paint tone will be the popular color of Model 25K cars or as the client’s preference.