Engine valve,valves and various auto parts
1.High quality and competitive price
2.Longlife and perfect after service
Engine valve,auto valves,valves for various engine1.Material: 40Cr, 4Cr9Si2, 4Cr10Si2Mo,5Cr21Mn9Ni4N(21-4N), X60, A80 etc.2.Production:5-25mm(diameter) of all...