... under presure for long time,advanced testing equipment to ensure thye quality,6.Packing:Wooden box ,sea ... or as customers request.7.Delivery time:30 to 60 days after we signed SALES CONTRACT.8.Port of ... heated and cracked in the presence of steam by tubular furnace,outlet temperature 815-870°C.Special ... in horizontal rows in a radiant chamber,leading to low ethylene capcity(20,000 mta,metric tonnes ...