Under the management of ISO9000 Standards from the bought -in martial to the after services,our products such as Gr.2 and Gr.3 flash welding marine anchor chain,which diameters ranging from 17.5mm to 122mm,and the accessories of all products above have gained the certifications issued by ABS,BV,CCS,DNV,GL,KR,NK,LR and so on. Please feel free to contact Abby. abby2008sales@gmail.com cb.jj@public.tz.jj.cn