SHENZHEN HENGSHIJIAN TECHNOLOGY COMPANY is one of the earliest E-cigarette manufacturers in China, was established in 2013. We mainl... MoreSHENZHEN HENGSHIJIAN TECHNOLOGY COMPANY is one of the earliest E-cigarette manufacturers in China, was established in 2013. We mainly focus on innovation and invention on E-cigs, our E-cigarette models are very popular in North America and the European Unions. We uphold the highest quality standards -- therefore, all HSJ all passed CE and RoHS certifications and meet the international environmental management.