... silicone meterial . 2,odorless and non-toxic water seal ring for water bottle 1,eco-friendly , durable silicone meterial ... soft ,flexible6,RoHS/FDA approved7,usage:waterproof and prevent water seeping out8,high quality ,competitive price9,good service, ... factory:DONGGUAN GOOD IMPRESSION INDUSTRIAL CO.,LTD Address: Zhangkeng Industrial park, West Hengli Town, Dongguan City, Guangdong Provice ,China ...