Juun 21, 2021, taxanaha YE4 ( hufnaanta tamarta IE4) saddex weji asynchronous matoorro ah oo ay samaysay Hebei Electric Motor Co., Ltd ayaa la siiyay "Shahaadada Shiinaha ee Ilaalinta Tamarta" Xarunta Shahaadada Tayada Shiinaha.Tani ma aha oo kaliya ka qaybqaadashadayada hagaajinta hufnaanta tamarta matoorka qaranka, laakiin sidoo kale tallaabada ugu horreysa ee si firfircoon kor loogu qaado shaqada "Emission Peak iyo Kaarboon Dhexdhexaadnimada".

Matooradayada saddexda weji ah ee YE4 waa matoorada wadista ugu fiican ee marawaxadaha, bambooyinku, kombaresarada, hoists, centrifuges iyo qalabyada kale ee warshadaha sida kiimikaad, sibidhka, waraaqaha samaynta, birta, saliida iyo gaaska dabiiciga ah iyo iwm.