1.Material: special valve bar material, 4Cr9Si2,4Cr10Si2Mo,21-4N,23-8N, X60, X80, Inconel751,21-4NWNb. 2.Production: CNC connection processing line, continuous furnace for heat treatment, friction welding, Stelli welding, U quenching, chrome plating, soft nitriding 3.Annual production capacity: 8 million 4.Delivery time: 10-30 days 5.Quality Guarantee: 12 months or 300000km 6.Certificate: ISO9001, IATF16949 7.Customization: design and develop new product based on sample or drawing. 8.MOQ: No qty requirement for stock.