Certificate

Classification	Type	Description
ISO	ISO9001	Quality Management system
	ISO14001	Environmental Management system
	ISO45001	Occupational Health and Safety Management system
ASME	“U”	Pressure Vessel(Div.1)
	“U2”	Pressure Vessel Altemative Reules
	“U3”	Alternative Rules for Constr uction of High Pressure Vessels
	“S”	Power Boiler
	“PP”	Pressure Piping
NB	"R"	Accreditation of "R" Repair Organizations
NB	-	National Board
Lloyd's Register	LR	Class 1, Fusion Welded Pressure Vessels (Group A)
SEL	SEL	Manufacture Licence of Special Equipment (china)

WOOYANG HC