Chinese zinc producers are ramping up exports after a global supply squeeze opened a rare window for overseas sales. Output in China, which accounts for over half the world's total, is tracking for an annual record at a time when global inventories of the metal are in sharp decline. Refined zinc exports likely shot up in October as a result, and are expected to rise further in the last two months of the year, as smelters profit from the spike in international prices while their domestic market stagnates. Export volumes may rise to as much as 50,000 tons for November and December combined, compared with about 10,000 ... (full story)