1Research on "one machine, one code" traceability system for waste electrical and electronic products ——Taking the 2018 Beijing energy-saving supermarket recycling pilot project as an exampleKANG Yuanfei, TONG XinArticles16-21,252Performance experimental study on applying different types of refrigerants to parking vehicle air conditionerGAO Hao, QI Wenduan, ZHANG HaoArticles22-253Lightweight design of the glass cup of blender based on TRIZ theoryWEI Yunjie, LIU Hailiang, LIU ChaodengArticles26-284Study on application of water bestrow transfer printing technology based on ABS substratesLIAO Yong, CHEN Sanlin, NI XuehuiArticles29-31,465Research on sound quality evaluation and modeling of refrigeratorsSONG Liqiang, MIAO Qing, WAN Cheng, CAO YanxinArticles32-356Low-frequency noise control and pipeline counterweight design of outdoor unit of air conditionerYANG Juntao, CHEN Zhiwei, GAO Zhiqiang, CHENG ShiArticles36-407Simulation and experimental study on the influence of air flow noise on indoor unite air duct systemMA Shichao, FAN Mingjing, HAO Benhua, CHEN XinhangArticles42-468Research and application on calculation and evaluation method of vibration and noise of air conditioning pipeline systemDENG Peisheng, LI Yuefeng, QUI MingyouArticles48-519Research on design scheme of damping pin of drum washing machine based on finite element analysisLIU Hefeng, XU Rui, WANG Yan, XU Jie, BAO YidongArticles52-56,6710Study on an evaporator flow path biased to intermediate energy efficiency based on Japanese APFOU Shuowen, ER ChimaArticles58-6211The study of dual fan system on internal airflow for household dishwasherTAN Yibin, ZHANG Linfeng, ZHONG Yuanhao, ZHANG JidongArticles64-6712Analysis of abnormal clearance of air guide plate in domestic air conditioner based on tolerance simulationZHANG XianlingArticles68-71,7513Standardization development of healthful household electrical appliances and home health managementSUN Ting, XU HongArticles72-7514Modal research of ultrathin drum washing machine case based on ARMA modelWANG Dongsheng, LING Zhidong, WU YunguiArticles76-78,8415Study on the method of preparing vibration (sine) test ability verification samples by modal analysisXU Lan, ZHAO Hongbin, SUN XuanArticles80-8416Evaluation of uncertainty in testing the fluid dynamic efficiency of range hoodWANG BoyanArticles86-90,10517Research and optimization of IH resonant voltage based on electromagnetic field and circuitMAO Zhaoyang, TANG Wenqiang, ZHANG JianArticles92-9618Innovation design of heat dissipation of power devices in converter based on ARIZCAO Wei, LIU LingArticles98-10119Design and application research on reliability of the all-plastic air deflector for heat pump air conditionerLI Youxia, JI Xiaowei, WANG Xianlin, CHEN Zhiwei, CHEN YingqiangArticles102-10520Methods to reduce the increment of power consumption in defrosting and recovery period of open-door air-cooled refrigerator researchYU Tao, LIU Quanyi, LI QingsongArticles106-109 