As a reliable and well-known fiber optic cable supplier. Since its establishment in 2014, Just Link Tech has been providing high-quality audio and video products. Our main focus is on developing HDMI 4k switchers, Type-C cable adapters, DisplayPort cable adapters, HDMI cables, HDMI adapters, HDMI switches, HDMI splitters, HDMI converters, HDMI extenders, HDMI matrices, and other related goods. As a reliable and experienced fiber optic cable supplier, we understand the unique needs of a business. For that reason, we provide a one-stop service to our customers. All of our products including the HDMI 4k switchers are CE, RoHS, FCC and other qualifications passed. Just Link Tech does not compare the quality. We have strict quality standards and each product is tested at least 3 times before shipping. For all of our goods, we provide at least 12 months of warranty. Because of our policy and product quality, we attract customers from more than 70 countries around the globe. Our customer countries include North America, South America, West Europe, East Europe, Australia, Southeast Asia, the Middle East, Africa and so on. After years of development, we have reached success in making audio and video products including HDMI 4k switchers.