Tandon Corp and minority shareholder Western Digital Corp have completed their joint venture plans (CI No 751) with creation of Westan Pte Ltd in Singapore. The ownership split was not given, but the new company will manufacture and market 3.5 Winchesters with integrated controllers for use in personal computers. The controller will be integrated with the drive rather than being a separate plug-in board. In itial shipments from Westan are set to start in the first quarter of 1988. In conjunction with the agree ment Western Digital may provide up to $10m of loans to Westan for working capital and expansion needs. The Irvine, California company has already lent $12m to Tandon, secured by certain assets and technology. Tandon will be using the funds for working capital.