Danyang Chunmei Electronic Technology Co,Ltd is the professional manufacturer of electronic connectors and the Antenna in Jiangsu province of China who has more than 13 years&#39 history. Unde...

Haidian District, Shangdi ten street, Beijing, China.

Beijing Smart Tag Technology Co., Ltd. is an enterprise engaged in smart cards and application thereof, system integration, R&D, production, sale and service of portable devices. As one of ent...