Siemens has signed an OEM agreement for Racal Redac’s Visula circuit board design and routing software, which it will market on its own workstations and the ones it is buying from Apollo Computer Inc. The contract is for a minimum of 280 systems, which Redac values at around UKP10m. Siemens will initially market the product internally and then to customers worldwide. As well as providing Redac with its biggest order ever, Siemens plans to collaborate with the Tewkesbury, Gloucestershire company on the development of software products tying together Computer Aided Design and Computer Aided Testing. Redac says that its 32-bit architecture, commitment to the Unix operating system and use of the C language won it the business with Siemens. Redac is negotiating a similar contract with another major corporation.