This document is a U.S. Agent Designation for Service of Process - Certification Attestation Letter. It confirms that Shanghai Huace Navigation Technology Ltd. has designated a U.S. agent for service of process, as required by FCC regulations. The designated U.S. agent is iGage Mapping Corporation, located in Salt Lake City, Utah. The document includes the FCC ID (SY4-A02063) and FRN numbers for both Shanghai Huace Navigation Technology Ltd. (0022641393) and iGage Mapping Corporation (0013933296). It also includes contact information for the agent, Mark E Silver, and confirms that the agent accepts the obligation for service of process. The document is signed by representatives of both companies, Glenn Chu for Shanghai Huace Navigation Technology Ltd. and Mark E Silver for iGage Mapping Corporation, with the date of 5/29/2025.