PPG, Polymeric polyol for rigid foam, flexible foam,elastomers etc .polyehter polyol for rigid foam 2.conventional pu rigid foam,refrigerator,freezer,PUR sandwich panel, pipe GradeOH(mgk/oh)WaterAcid Valuemgkoh/gk+ppmPHViscosityUsageLY-4110A430±300.1 9-112000-3500conventional PU rigid foam/refrigerator/freezer/spray foam PUR sandwich panel/pipe/solar etcLY-4110B430±300.1 9-113000-5000conventional ...