In June 1996, YIHUA GROUP CO. POLYESTER FILM FACTORY was set up and Production Line I came into production. 

·In July 2001, joint venture YIHUA TORAY POLYESTER FILM CO., LTD. was established. 

·In December 2002, ISO9001：2000 certification was obtained. 

·In December 2003, ISO14001:1996 certification was obtained. 

·In December 2003, GB/T 28001 certification was obtained. 

·In April 2004, Production Line II came into production. 

·In February 2006, Production Line III came into production. 

·In May 2011, Production Line IV came into production. 

·By October 2013, Production Line V is expected to come into production.