S. 9(1)(i) : Income deemed to accrue or arise in India-Business connection-Permanent Establishment-Supply and delivery of equipment and supervision, installation, erection and commissioning activity-Single composite contract-Assessee had PE in India-Income attributable to Indian PE from said contracts is taxable in India-Matter remanded to the file of the AO for computation-DTAA-India-Germany. [Art. 5, 7]