... Top ring material 304/316L/Stainless Steel material 2.Independent development mould ability 3.ISO9001:2008 Production details list Product ... Treatment, Griding, Milling, wire EDM, Linear Cutting etc.Independent development mould abilityWe can provide samples(one piece)before substantial orders ... , similarly, the market is the key to the development of enterprises. We would like to cooperate with new ...