Slong(Hongkong) Limited is a professional cylinder battery,Li-polymer battery and other portable electronic products manufacturer  and more. We have over 5 years of experience in the battery and electronic products We have established good business relationship with many countries from all over the world such asEU countries,Middle East and so on. Why we grow up so fastly? proven technique,suitable packaging, fast delivery and tracking,12 months warranty,you just have to p...