ISO 9001:2015
ISO 9001:2015
ISO 14001 : 2015
ISO 45001 : 2018
ASME PRT(Div.1) 
ASME PRT(Div.2) 
PATENT / CYLINDRICAL TUNNEL TYPE VALVE CHEST
PATENT / ELBOW INSIDE OVERLAY
CERTIFICATE OF EXPORT PROMISING COMPANY
CERTFICATE OF FAMILY-FRIENDLY CORPORATION
CERTIFICATE OF CORPORATE AFFILIATION INSTITUTE
CERTIFICATE OF VENTURE BUSINESS
                        
Location 28, Gadal 2-ro 55beon-gil, Gangseo-gu, Busan, 46729, Korea
                            
TEL +82-51-710-1551
                                
E-mail darinsteel@naver.com
                                    
FAX +82-51-710-1552