①Eligibility: · Registered members · Have previously purchased HVAC products · Total historical order value ≥ $1,000 as of October 11 Due to the limited number of trial units, applicants will be ranked by their total historical order value, and the top 30 will be selected. ②Application Period: Sept 21 – Oct 11. We will notify all applicants after October 11. ③Feedback Deadline: Within one month after receiving the product. ④Feedback Format: · Trial report: required (a template will be provided) · Trial video: optional ⑤ No Return After Trial ⑥Participants who submit feedback on time and as required will be given priority for future trials. Otherwise, they may not be offered future trial opportunities.