Aquark has a professional R&D team with over 20 years experience on pool heat pump. It developed a stepless DC inverter technology, which is more advance than normal inverter. For example, step Inverter can adjust the speed 20% by 20%, or 25% by 25%. Aquark’s stepless inverter can adjust Hz by Hz to the best condition for using. 2. Aquark has very strict quality control system. Start form raw material and components testing, to the production chain, all steps strictly follow the standards. It’s failure rate is lower than 0.5% which is an outstanding number among the manufacture. 3. Aquark’s product has many differences. Those differences make it unique in the market and bring more attention. Innovation is in every product of Aquark. It’s also one of the key of Aquark to being competitive.