Shenzhen Langheng Tech. Co., Ltd is a professional manufacturer integrating developing, producing and marketing of computer video, audio, keyboard, mouse, USB, network and related accessories. We have a team of professional and well-educated members aiming to supply best products and services.

We firmly regard the continuous innovation and self-owned intellectual properties as the strong backup for our success. Based on the principles "profession, innovation and services", we are willing to cooperate with all your esteemed companies.

With year's efforts, we have successfully developed many high-quality & low price products, such as VGA Video Extender, Audio Extender, KVM Extender, Keyboard & Mouse Extender, USB Extender, DVI Extender, KVM Switch, Keyboard & Mouse Switch, VGA Video Splitter, Video transmission, Twisted-pair transmission etc. These products are mature and stable, and have passed various tests and have been widely used in governmental institutions of all levels, enterprises, providing solid technological security to big engineering projects.

Shenzhen Langheng Tech. Co., Ltd owns patents of twisted-pair transmission tech. Like VGA video, keyboard & mouse, USB connector etc. Our products are widely used in supermarket monitor, security, hotel management system, audio monitor, audio matrix, **conferences, large-scale screen display system, advertisement display system, electrical power monitor system, bank and securities display and monitor system, industrial control, hi-tech laboratory computer system, large-scale electronic guidance system and transportation system etc.

We firmly deem customers, technologies, quality and services as the development resources of our company. Inquiries from old and new clients are warmly welcomed. To provide best products and services is our goal and your satisfaction is our success.

We promise seriously: : One-year free maintenance In case of any quality problem, you many return the product within 15days after your purchase, with refund of the payment, or may get a new one as exchange within 3 months after the purchase.