Sebi has approved the IPOs of Kalpataru Ltd and Unimech Aerospace. Kalpataru plans to raise Rs 1,590 crore through a fresh issue, while Unimech Aerospace recently raised Rs 250 crore in a private placement. Kalpataru focuses on luxury, premium, and mid-income real estate projects, while Unimech Aerospace specializes in machining, fabrication, and assembly of aerospace components.