Easing trade tensions between the United States and China has improved investors’ sentiments, driving the global equity markets. Meanwhile, the S&P/TSX Composite Index rose 11.8% from last month’s lows. Despite the recent increases, the following three stocks still trade at a substantial discount compared to their 52-week highs, thus offering excellent buying opportunities. Celestica First on my list is Celestica (TSX:CLS), which reported an impressive first-quarter performance last week, exceeding its guidance. The supply chain solutions provider posted a revenue of $2.65 billion, representing a 20% increase from the previous year. A 28% growth in its CCS (Connectivity & Cloud...