... , water treatment, petrochemical industry, and on loads of pump, blower, pumping unit, air compressor, ball mill, crane, compressor, crusher ... insulating material imported with original packing and modern power & electric control technology, which is applicable to large and medium high ... more than 2000 meters, no corrosive gas, no conductive dust, no severe shock (less than 0.5G), well-ventilated ...