2010. Jul : Changed name to Soltech Ltd and moved to new factory.
2010. Jul : ISO 9001:2008 Quality Management System Certified.
2010. Jul : ISO 14001:2004 Environment Management System Certified.
2004. Mar : Establishment of Photonics -R&D center for Electronic material.
2001. Jan : Establishment of Soltech Ltd in China – Branch office and warehouse.
1999. Nov : Establishment of Yoosang Chemical Ltd