CO-SYS IT Company Limited

Mobile：+86 18902836455

Skype：+86 13713992793

Email: cosys@cosyswireless.com

WhatsApp：+852 54916579

Website: https://www.5g-m2m.com

Add：RM.517, NEW CITY CENTRE, 2 LEI YUE MUN ROAD, KWUN TONG, KOWLOON.HK