... 15years profession experience 3.ISO9011 4.lots expansion rubber bellow/bellows expansion rubber bellow/bellows1.flexible2.15years profession experience 3. ... ISO90114.lots expansion rubber bellow/bellowsSphere: neoprene,NB,NBR,SBR,EPDM,Nylon Cord Fabric ,etc Diameter Size: DN20 ... air,water,sea water,hot water,weak acid,etc.rubber bellow/bellows Package:Wooden case ,carbon box Contact us ...