Mumbai, April 30 -- Malu Paper Mills Ltd, Growington Ventures India Ltd, Global Vectra Helicorp Ltd and Jet Freight Logistics Ltd are among the other gainers in the BSE's 'B' group today, 30 April 2025.A B Infrabuild Ltd surged 14.08% to Rs 91.5 at 12:02 IST. The stock was the biggest gainer in the BSE's 'B' group. On the BSE, 22697 shares were traded on the counter so far as against the average daily volumes of 8732 shares in the past one month. Malu Paper Mills Ltd soared 13.80% to Rs 46.6. The stock was the second biggest gainer in 'B' group. On the BSE, 1.38 lakh shares were traded on the counter so far as against the average daily volumes of 4999 shares in the past one month. Growington Ventures India Ltd spiked 11.46% to Rs 1.75. Th...