We are member of Worlddiac and own ISO9001:2000 Certificate.We are specializing in Development, Production, and Sale of Technical & Vocational Teaching & Training equipments. For details ,Pls kindly vist our website :http://www.yalong.cn Our Products are mainly in fields: Electrical Engineering, Electronics, Electric Traction, Automobile, Refrigeration & Heating System, CNC Machine, Household Electrical Appliance,Electromechanics, PLC/Single-chip Microcomputer, Hydraulics, Pneumatics, Mobile & Telecommunication; Industrial Process Control; Modular Production; Language Learning and so on.