MUMBAI: Tata Steel is severing a quarter-century-old partnership with Germany’s Martrade, buying out the logistics group’s 23% stake in their joint shipping venture for Rs 335 crore.The steelmaker is acquiring 41.4 lakh equity shares in TM International Logistics from IQ Martrade Holding Und Management, taking its holding from 51% to 74% once the deal closes; […]