... A Q Q:Can i order one piece for sample to test the quality?A:Yes, We recommend to check ... of this page.Q:If i want cheaper quality, can you produce?A:Yes, Just send us ... such as the Item Number, Quantity for each item, Quality request, Logo, Price Term, Transport method, Discharge place ... pressure ratio is 8:1, please install the pressure-limiting valve. PROCESS SCHEME Making Iron Mold - Sand Mold - ...