(Feb.21 Beijing) Till Feb.8, the Maoming ethylene plant of Sinopec Corp. has run continuously for six years without overhauling. Some senior domestic ethylene experts deem Maoming has made three breakthroughs in following sectors. First, it breaks through management stereotype and upgrades overhauling level. Second, it propels its economic development to a wholesome cycle. Third, it applies high-tech to its production practice more effectively.