SHANGHAI, May 15 (SMM) - With the die-casting zinc alloy industry gradually entering the off-season, it is expected that the operating rates will decline slightly in May. The average operating rate of die-casting zinc alloy enterprises in SMM’s old sample is estimated to drop 2.77 percentage points MoM and 0.39 percentage point YoY to 29.01% in May. The average operating rate in SMM’s new sample is expected to fall 3.21 percentage points MoM and 4.13 percentage points YoY to 41.22%.