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
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.