Analyst Deepak Pal sees over 20% upside in Hindustan Zinc from ₹451, despite short-term weakness. The stock is taking support at its 200-day EMA and may hit ₹550 if it sustains above key EMAs. It has been on a downtrend since June 8, when it touched a high of ₹546.8. A ₹12,000 crore expansion plan supports the bullish long-term view.