... E,F,DC,DP 3.Samples:free samples stainless steel quick coupling hose connectors type B Precision Investment Casting: Silcon Sol ... customers requirements.3,Samples: with free samples 4,Applications: gas, water, oil, and some corrosive liquids. Casting method is investment ... CNC Precised Machined: 2 Production Lines, including 2 CNC, 8 Automatic Lathes & 12 Manual Lathes Quality Control: 4 QC, first- ...