HFBS-708 is specifically designed for high-end decoration doors andWindows.Its specific formula makes a lower density than HFBS-701 andthe same weight of sealant can apply into more meters of spacers.The highperformed sealant also has lower water vapor transmit ability and betteraging resistance.HFBS-708 has higher cohesion strength,especiallysuitable for the production of insulating glass in jumbo sizes.