Thirty days is a focus on cutting-edge technologies Electric Industrial Co., Ltd., scientific research, development, production and sales of high-tech enterprises. Shanghai as the center, professional production and sales of inverter, inverter motor, general electrical and electronic products. And through the national ISO9001: 2000 quality management system certification standards. 
 Day Thirty PI7100G / P series high-performance all-digital intelligent drive, using the optimized voltage space vector (SPWM) technology control. Voltage to adapt to strong fluctuations of up to 20% -20 %---+; high a torque; RS458 communication interface. Product specification is complete, the largest single capacity of 500KW. Widely used in machinery, metallurgy, textiles, chemicals, plastics, paper, refrigeration, electricity, and construction industries. Modern industrial drive and control the core technology, remarkable energy saving, high degree of self-control, run and low cost.