... materialof silicone diaphragm has different performance, we can manufacture at customers's requirementsSurface of silicone diaphragm:no dirty, no air ... ,CFR,CIF or EXW Delivery:8-45 days according to the order Delivery Way:Vessel,Express(DHL,TNT,FEDEX), ... Control:Internal QC controlPacking:neutral packing or other packing according to your needs.Sample:Free After-Sales Service: 100% responsible ...