Tun lokacin da aka kafa shi a 1989, Shanghai Xinjiang biyu dunƙule inji Co., Ltd. ya mayar da hankali kan keɓaɓɓun keɓaɓɓun filastik extrusion inji da kuma filastik taimakon inji. Yanzu samar da SJSZ jerin ƙuduri (super ƙuduri) siffar biyu, SJW guda dungulla extruder, PVC-U core kumfa bututu na'ura, high gudun PVC wuya bututu na'ura, bambancin siffar na'ura, PVC itace roba majalisar kwamitin tabarau samar da layi, PVC itace roba kumfa kofa tabarau samar da layi, PVC granulating na'ura da SJW jerin guda dungulla extruder, PE, PPR bututu samar da layi, PE kauri tabarau samar da layi, PC sararin samaniya subboard samar da layi, PVC, PE corrugated bututu samar da layi da sauran roba na'urori. PE, PP sake amfani da tsabtace granulator layi, da dai sauransu.