Most of the inventory cylinder liners have been certified by authoritative classification societies for ship inspection.，Applicable models cover Most of the stock cylinder liner
has the authority classification society certification, applicable to below model:
：S46MC-C, S50MC-C7/8/9，S50MC-C,S50ME-B, S60MC-C, S70MC-C, RT-FLEX58T-D, RTA52U, RTA84C etc.