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 YZ25K Air-Conditioned Semi-Cushioned Seating Car.The planar arrangement of this car is as follows: vestibules at its both ends; attendant’s room, electric water boiler, four-in-one electric apparatus cabinet at “B” end of the car; two lavatories and two open-type washing rooms at “A” end of the car; passenger compartment 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.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.Due to more passengers in the car, some extra consideration such as two washing rooms, two lavatories and two air-conditioning sets are achieved. In the lavatory, stainless steel pipes and facilities with the features of anti-corrosion and durability are employed to the most extent. Considering the cold weather in the northern China, warm water tank with electric heater is placed under the counter of the washing room.The SW-160 bogie is equipped with hot axle alarming device. 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 tone of Model 25K cars or as the client’s preference.