ul li p7252019 IETS Design Physico-Chemicalp p13p li li p7252019 IETS Design Physico-Chemicalp p23p li li p7252019 IETS Design Physico-Chemicalp p33p pARIFFULLAH BIN NOH 800527-02-5665 013-4160486 ariffullah@petronascommyp li ul