1. Whether to accept customization of non-standard products Answer: Yes, our company has its own R&D team, which can customize R&D products according to customers' needs. 2. Whether the thermostat can customize the logo Answer: Yes, we can engrave customer logos for free. 3. Is it possible to provide samples for free Answer: If you are purchasing products in bulk, we can provide free samples for testing, but the freight needs to be borne by yourself 4. Does the wifi model support smart speakers? Answer: Yes, our products currently support: Amazon Alexa./Google Assistant /Yandex Alice/SmartThings 5. There are several color options for the product Answer: Our regular colors are gold, silver, white, and black. If there are a certain number, we can also make any color. 6. What kind of voltage is suitable for the product Answer: The conventional product is 110-240VAC, 24VAC, and other voltages need to be customized.