Standard: Quality Management System Number: 10117Q13469ROS Issue Date: 2017-06-13 Expiry Date: 2020-06-12 Scope/Range: fiber jumper, optical couplers, isolators, circulators, etc Issued By: Beijing Zhongliantianrun Certification Center

Standard: RoHs Number: HTT170810258RR Issue Date: 2017-08-25 Scope/Range: circulator, splitter, coupler, jumper Issued By: Shenzhen HTT Technology Co.,Ltd

Standard: Business licence Number: 0004427137 Issue Date: 2012-07-05 Expiry Date: 2017-07-11 Scope/Range: Issued By:

Standard: Tax registration certificate Number: 440300599050687 Issue Date: 2012-07-09 Scope/Range: Issued By: Marktet supervision Administration of Shenzhen Municipality