Since 2001, Keao( Keao Electrical & Mechanical Co.,Ltd) has been committed to producing and exporting high quality electromagnetic retarder and cooling DC motor fans in China, which plays an important role in leading a industrial criteria for domestic integrated braking and air conditioning system. Our manufacturing base is located in GuangZhou, which covers 34,000 square meters for R&D and production, which will obtain the license from government authorities with a production capacity for annual 50,000 complete retarders, cooling fan and other re. So far, it has had nine patents in the State Intellectual Property Office (SIPO) of the P.R.C.. What's more, there are 3 patents for invention and 5 patents for utility model recorded in the SIPO. In years, Keao has developed three series about 18 specifications and 40 varieties retarders. Now we are well known for our positively innovation and prevision in researching and developing electromagnetic retarders for auxiliary braking system of vehicles and other auto accessories.. What we are always pursuing is " Focus on a much Safer and Easier Transportation". We will always be there for your service, let's all work together.