Most GPS module suppliers are based in Asia or Eastern Europe, where manufacturing costs are lower and supply chains are more established. Applied Technical Systems is based in the United States, which means they likely offer higher-quality control, faster response times, and better compliance with North American standards. However, none of their key verification details — work email, phone, or business documents — are confirmed, which raises concerns about legitimacy and ability to handle large or long-term orders. Buyers should verify these details before committing to any purchase, as unverified profiles can lead to delays or fraud. The focus on GPS modules suggests a niche, high-tech market where reliability and technical support matter more than volume. Without verified contact or documents, it's hard to trust their ability to deliver on specifications or respond to urgent issues.