The construction started in May 2011 with a registered capital of 20 million yuan;

In 2012, it passed ISO9001-2008 quality management assurance system and ISO14001 environmental management system certification;

In April 2013, it was approved by Binzhou Environmental Protection Bureau of Shandong Province;

In December 2013, it was approved by Binzhou Safety Supervision Bureau of Shandong Province for completion acceptance of safety facilities;

In January 2014, the company obtained the work safety license