Certification/Patent

	Register No	Date	Subjects
Patent	0409043	2003.11.28	CDG Manufacturing
Patent	0409044	2003.11.28	CDG Structure
Patent	0409045	2003.11.28	CDG Diaphragm Alignment
Patent	0409046	2003.11.28	CDG Insulation Structure
Patent pending		2006.11.13	Construction of temp' compensation of vacuum sensor
Patent pending		2006.11.13	Vacuum detection system
Registration of Design		2006.11.13	Digital Vacuum sensor and its controller