| Sept 1952 | Meishan Mirabilite (the predecessor of Chuanmei Mirabilite) was established in Meishan, Sichuan Province |
| 1953 | Production commenced in the Dahongshan Mining Area |
| Apr 1983 | Production of medical thenardite began |
| Aug 2004 | Chairman Suolang acquired 90.0% equity interest in Chuanmei Mirabilite |
| Jun 2005 | Chuanmei Mirabilite obtained product certification for thenardite products, granted by the China Certification Centre for Quality Mark |
| Feb 2007 | Chuanmei Mirabilite obtained ISO 14001:2004 (Environmental Management System) certification for thenardite production and relevant management activities |
| Apr 2007 | Lumena was incorporated as the Group's holding company in anticipation of a global offering |
| Jun 2007 | Chuanmei Glauber Salt was established |
| Sept 2007 | Company entered into agreement to acquire mining rights in the Muma Mining Area |
| Nov 2007 | Guangji Mining Area commenced pilot commercial production |
| Mar 2008 |
Company obtained 0.3 million tpa glauberite mining rights in Muma Mining Area Registered trademark "Chuanmei" was recognized "China Well-known Trademark" |
| Sept 2008 | Company obtained 1.0 million tpa glauberite mining rights in Muma Mining Area, 3.0 million tpa glauberite mining rights in Guangji Mining Area and 1.2 million tpa glauberite mining rights in Dahongshan Mining Area |
| Jan 2010 | 200,000 tpa medical thenardite production line in Muma commenced production |
| Sept 2010 | Construction of 300,000 tpa animal feed thenardite prodcution line in Yuegou completed and operation commenced |
| Dec 2010 |
Successfully acquired Sino Polymer New Materials Co., Ltd. Renamed as China Lumena New Materials Corp. |


























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