FRP profiles having dimensional stability design because during processing by the system thermal efficiency will force its internal reticulate structure is formed, is kept small after shrinkage after shaping, at normal temperature does not change size, even if is the result of long-term heavy load, the size of the change is very small. FRP profiles are composites, and other composite materials, like with good electrical insulation properties, the product does not stray current corrosion and electrochemical corrosion, can be used to manufacture induction electric resistance, voltage, arc resistance superior special parts, insulating parts such as the motor. FRP profiles (http://www.jinglong2008.com/blgxcjl/) are also very excellent corrosion resistance, corrosion and electrochemical mechanism that many ordinary steel difference, do not have the electrical conductivity, which means that in the dielectric solution not dissolve the ion, so it will not have a negative change for a variety of high concentrations of acid substances or salts medium, excellent stability determines its broad scope, has been gradually replaced by metal, chemical corrosion of stainless steel in the job position. zq