My company in 2012 for the Shenhua Ningxia coal methanol to olefin project manufacturing and installation of 6 sets of 2500m3 hybrid material for 07MnNiMoVDR Propylene Spherical tank, diameter 17000mm, thickness 46mm. the project issued by the group of Shenhua Ningxia coal methanol to olefins project "outstanding subcontractor" honorary title.