Astra Microwave Products Ltd stock surged up to 3.95% to ₹986.45 after securing a ₹135 crore order from DRDO for upgrading ground-based radar systems, with delivery in 18 months. This order strengthens Astra's robust and diversified order book for future growth. Astra reported robust and diversified order book for march quarter, with total orders received amounting to ₹420.7 crore.