Mumbai, May 28 -- Precision Camshafts Ltd, OCCL Ltd, Apollo Micro Systems Ltd and State Trading Corporation of India Ltd are among the other gainers in the BSE's 'B' group today, 28 May 2025.Ravindra Energy Ltd soared 19.98% to Rs 143.5 at 11:59 IST. The stock was the biggest gainer in the BSE's 'B' group. On the BSE, 2.41 lakh shares were traded on the counter so far as against the average daily volumes of 22096 shares in the past one month. Precision Camshafts Ltd surged 14.42% to Rs 195.95. The stock was the second biggest gainer in 'B' group. On the BSE, 1.65 lakh shares were traded on the counter so far as against the average daily volumes of 17922 shares in the past one month. OCCL Ltd spiked 13.07% to Rs 97.27. The stock was the th...