... 300 400 600 900 1500 and 2500, PN :6 10 16 25 40 64 and 160,5K-40K and so on ... . 7. Sealing surface : FF ,RF, LJ, FM ,R.T.J ,R.J ,MALE ,FEMALE and so on . 8. Used for ... license of special equipment of the P.R.C. 15. Marking :according to client's requirement. 16. QC staff :10-15 . 17. Inspection ...