... 2.Approval by marinly Classification Societies 3.China's large marine factory Marine Anchor chain Ship Stud link anchor chain & studless link ... -standard products in order to satisfy customers.Approved SocietiesApprovalby 11 international Classification Societies, such as ABS, BV, CCS, CR, DNV, GL ... (U. K. ), NK(Japan), RINA(Italy), RS(Russia) & Works Certificate Marine Anchor chain