Hope Senlan Science & Technology Corp., Ltd. (Slanvert for its abbreviation.) is a Chinese national level high-tech enterprise that specializes in frequency conversion technology R&D. Slanvert is also devoted to the design, development, production, sale and maintenance of inverters and related products. As one of the earliest companies which embark upon the frequency conversion technology research field, Slanvert has become one of the biggest inverter manufacturers in China. Senlan is also the only winner of 'China Top Brand' in China's low-voltage inverter industry.