New and upgraded version in 2022: ① Unique finishing thread function ② The appearance of the machine is more beautiful, ③ High efficiency and low operation and maintenance cost. ④ Low cost and high profit. ⑤ Internal humidification burner does not consume water. ⑥ The burner system is smoother. ⑦ The pattern is more stable ⑧ No condensed water in winter. Pet-name ruby machine warranty for one and a half years.