In 2012 as "China coal Shaanxi Yulin energy and Chemical Co. Ltd and methanol utilization project manufacturing diameter is 18000mm, the material of JFE-HITEN610U2L structure with 3 10 pillars of the 6 sets of 3000m3 ethylene spherical tank; the diameter is 18000mm, the material of Q370R structure is 4 3000m3 with 3 Propylene Spherical tank 10 pillar, which 3000m3 for ethylene spherical tank was the largest ethylene spherical tank.