1.High efficiency . 2.LCD dynamic display 3.Warm and cosy ,concise and elegant 4.Gas burners for boilers 5.ISO9001-2000. Features :Warm and cosy ,concise and elegant With the Large-screen LCD dynamic display,you could see clearly the water temperature of bathing and heating, operational condition and self-test and self-diagnosis of faliures. It can be burnt airtightly under negative micro- ...