FS is a global leading communications hardware and project solutions provider.Our products are ISO, ROHS, CE, and FCC certified to meet the industry standards. With a strong emphasis on quality control, a dedicated R&D team will run rigorous tests before shipping. Apart from offering optical products, FS professional and experienced engineers can provide first-class technical support and design suitable network solutions with their technical expertise.We have built a global warehouse system to ensure fast same-day shipping for most in-stock orders. Our warehouse are located in USA, Germany, Australia, Singapore and China, more warehouses & offices will be set up in other countries in the future.FS Technical Support & Customer Service Team are 24-hour online to provide professional support on products or services problems.