Around 1964, when the hotel was still an office building, our electric shutters were used. At that time, the company supplied more than 1,000 sets at the beginning of its establishment. This was our challenge, but we also completed it as scheduled. With the changing times, this building has also become a hotel. Until now, if the building needs to replace the curtains, it will still find us to buy back. Since long-term cooperation, we have accumulated more and more experience.