Hangsen(https://hangsen.com) is a world-leading manufacturer of e-liquids, with a rich history in the vaping industry. Established in 2009 by its CEO Yao Jide, who is often referred to as the "father of E-liquids," Hangsen has its roots in China but quickly expanded to global markets. As of my knowledge cut-off in September 2021, Hangsen was selling its products in over 85 countries with several production facilities across the globe.