Our product is designed and developed for home improvement and under DIY concept. The product is suitable for window size with width from 0.5m to 2.0m(CL-338TG2M). Customers can install the product according to instruction manual easily. It is not necessary to find an expert for the installation. The package is designed for DIY store, it is very convenient for the customers to bring it home from the store.Compare with similar products in the market, our price is much lower than others but also has safe, reliable and good quality. Our remote control can operate eight units without interference each other.Since our product is not complicate to install and operate, the price is acceptable but not high. We believe that there is room for the product in the market and it will become a popular products in the coming future.