Hangzhou Yichwan Electronics Co., Ltd. was established in 2016, the team from China's top 500 enterprises. The word "Yi Chwan" is taken from striving for perfection and embracing all rivers. Frequency conversion control technology is our advantage, with the core software algorithm and the corresponding intellectual property rights. Leading by software and hardware experts, more than 80% of technicians, continue to develop new products to meet customer needs. We pursue to make the best products and make our contribution to energy saving, green and environmental protection. Our products are widely used in air conditioning HVAC, air source heat pump, new energy vehicles, engraving machine equipment, room air conditioning and other fields. Air source heat pump controllers and components, controller software products, industrial inverters, compressors and motor drives are our core technology products. At the same time, we can provide customers with hardware, software and system control solutions. Now, our technology can achieve accurate defrosting, energy saving of more than 30%,