1

ZL200610089354.3

Method for producing olefin by using vegetable fat and animal fat

2009-10-7

2

ZL200710064235.7

Method for preparing dimethyl ether by dehydration of methanol

2009-7-15

3

ZL200510086320.4

Method of preparing ethylene, propylene and aromatic hydrocarbons by catalytic cracking gasoline

2009-1-14