Widely used in petrol™'¥eum, chemical industry, muni‌©cipal administration, food↑↑≤★ and beverage, leather,φ÷ welding materials,papermaking, printin ₽g and dyeing, electric p•γ≠÷ower, coal, pharmaceu↑φ↑tical, glue and other i↔<≥ndustries