Tell me about the one who installed the doors and windows of Salokai system. Is it effective?

Salokai system doors and windows can work, and the quality of pulleys on the windows is particularly good. My family has been using it since 2009, and it hasn't stopped for a day. The door is also Salokai's electric password door, which is full of sense of technology and security and deserves unlimited Amway. This kind of thing has been used for decades, so it is better to choose a reliable brand.