We are the largest electric refrigeration air conditioning and compound material production base in northern China. Possesses more than 200 sets of key machineries such as OAK ?evaporator and condenser production line? made in USA, AMADA numerical control sheet-metal machineries made in Japan, computer control spiral wound GRP pipe production line made in Italy, Loemot air purification equipment production line made in Germany, spraying equipment made in Austria, 200-630 ton stamping presses, slice production line, large type plasma cutters made in Germany, plate shears, circle shaping machineries, flanging machines and so on. The new built air conditioning CIS hall, 3600 m2 , is a production and culture exhibition one of air conditioners that has the largest area, most complete exhibits, most advanced facilities in our country.