news magnetic levitation track shock absorber mat tri(dimethylaminopropyl)amine cas 33329-35-0 dynamic load response optimization technology microlevator track shock absorber pad tri(dimethylaminopropyl)amine dynamic load response optimizati... 03/2084Magnetic levitation track shock absorber mat tri(dimethylaminopropyl)amine CAS 33329-35-0 Dynamic load response optimization technology