BBK Vivo X3, with a thickness of 5.75mm, is world’s thinnest smartphone. HTC 宏达 HTC is a famous smartphone brand based in Taiwan.It mainly provides smart phones to top mid and low customer bases.

MEIZU 魅族 Meizu is a Chinese smartphone producer from Zhuhai, China`s Guangdong province.Its high-end smart phones has remarkable share in Western world market. OPPO 欧珀 OPPO is an electronics producer based in Dongguan, Guangdong Province.