เครื่องถูกปิดผนึกอย่างแน่นหนาเพื่อกักเก็บสารมลพิษเอาไว้ That Experience has served me gather objective info on their lengthy-term purifying overall performance and any mechanical degradation. It has also served me make educated judgments on components which include ease of maintenance and Procedure, the presence or lack of distracting noises or lights, and straightforward Visible effe... Successfully Submitted (Awaiting Approval)