Ni Oṣu Kini Ọjọ 13, Ọdun 2020, Ningbo Yongshen Electric Appliance Co., Ltd imudojuiwọn ijabọ CSA 1610337 lati ṣafikun awọn awoṣe tuntun YD1.5-1P, YD1.5-2P, YD1.5-1AP, YD1.5-2AP eyiti o lo tuntun tuntun titẹ bọtini.