private void MutiSignByPlatform(string documentId) { PlatformMutiSignRequest mutiSignRequest = new PlatformMutiSignRequest(); List <RemoteStamper> remoteStampers = new List <RemoteStamper>(); RemoteStamper stamper1 = new RemoteStamper(); stamper1.documentId = 2560294199182234262; stamper1.sealType = RemoteSealType.SEAL; stamper1.sealId = 2553205357123998650; stamper1.offsetX = 0.1; stamper1.offsetY = 0.2; stamper1.page = 1; remoteStampers.Add(stamper1); RemoteStamper stamper2 = new RemoteStamper(); stamper2.documentId = 2560294199182234262; stamper2.sealType = RemoteSealType.TIMESTAMP; stamper2.offsetX = 0.5; stamper2.offsetY = 0.6; stamper2.page = 1; remoteStampers.Add(stamper2); RemoteStamper stamper3 = new RemoteStamper(); stamper3.documentId = 2560294199182234262; stamper3.sealType = RemoteSealType.ACROSS_PAGE; stamper3.sealId = 2553205357123998650; stamper3.offsetY = 0.2; remoteStampers.Add(stamper3); mutiSignRequest.stampers = remoteStampers; signService.MutiSign(mutiSignRequest); }