... 3 hours 3 genman technic 4 6 patents in china Sound barrier Advantage: 1) Makrolon PC resin from Bayer in ... Weight 4) Impact Strength 5) Inhibiting Condensation 6) Thermal Insulation 7) Sound Insulation 8) Flame Resistance 9) Easy Installation 10) Enviromental ... , hotels, villas, stadiums, schools, amusement centers, hospitals etc. 3) Sound absorbtion wall for freeways, high-speed railway and MRTS. 4 ...