Decomposition of petroleum or heavy petroleum fractions into more useful lower-boiling materials by heating at 500C and 30 psi over a silica-alumina-manganese oxide catalyst.
Hangzhou ZeErRui Chemical Co., Ltd. Hangzhou ZeErRui Chemical Co., Ltd. located in Lingang industrial areas, our plant covers an area of 6000 square me.. Tianjin YR ChemSpec Technology Co.,Ltd. YR Chemspec?is a qualified manufacturer and supplier which audited and approved by SGS and ISO,we are strictly foll..