Service and Training：
Ching Kong prides itself on its dedicated pre-sale and post-sale customer service and technical support.
Both our Sales and Technical Engineering teams are intensively focused on delivering ideal solutions to our customers, both end users and distributors/integrators. We work together with our customers to provide profess professtional
 and highly reliable solutions which consistently prove to be perfectly suited to the particular needs of each individual customer.
Our core products, consisting of a comprehensive range of Vehicular Bomb Jamming, portable/tactical bomb jammers and fixed-installation jamming systems are designed for fast and easy field deployment and operation. Simple-to-follow operating manuals accompany each system. For customers of our integrated vehicular jamming systems, we conduct two- or three-day in-depth training seminars at the customer’s location or our own premises, whichever the customer prefers.
Ching Kong has invested heavily in the development common electronic security devices for Cellphone jammers, GPS Jammers, WiFi/Bluetooth signal Jammers，Handheld Jammers Solutions, Spy UAV Drones Defend System and so on,Also offering a lot of wireless devices of Cell phone Signal Amplifier(Booster), telecom Antenna, VCO, Adapter products,etc, 
We develop and manufacture devices vital to the protection of human life, and we are totally committed to quality assurance in every aspect of our products and services. Although our jamming systems are designed to be virtually maintenance free, our Service Engineers are on hand day and night, by email and telephone, to provide immediate troubleshooting and support.
Our goal is to deliver optimum solutions, while ensuring their continuous and trouble-free operation. Please contact us today for more information.

About Signal Jammer FAQ：

Mobile Phone Signal Jammer - an instrument used to prevent cellular phones from receiving signals from or transmitting signals to base stations. When used, the jammer effectively disables cellular phones. These devices can be used in practically any location, but are found primarily in places where a phone call would be particularly disruptive because silence is expected. Besides this, the jammer in this catalogue are compatible with Telephone Jammers, GPS Jammers, Bluetooth Jammers, Wifi Jammers, 3G Phone Jammer, 4G Phone Jammer, Spy camera Jammers, and Wireless Video Jammer, Drone UAV Jammers etc.
Use Notices of Signal Jammer:
- Before linking all the antenna, power supply shall not be switched on at first. Non taking off antenna when the mainframe is in the working condition.
- When use the jammer outdoors, Preventing water shall be taken into consideration.
- Antenna shall be used vertical to the ground.
 Question and answer about Jammer:
1. Will jammer interference the other electronic devices to be in good working condition? 
No. Because the electromagentic signal sent by jammer are totally used in the band that regulated by government and just have interception effect to cell phone communication.
2. Will jammer have bad effect to human body and cell phone?
You should not worry about it.The intensity of electromagnetic signal sent by jammer is in compliance with the national standard of environmental electromagnetic wave health,the signal sent by jammer is relatively small and no damage will appeared on human body according to the testing files.Meanwhile,this device is just damge the receiving condition to cell phone and makes the normal connection between cell phone and base station impossible. Therefore,no damage will occur on cell phone itself.
3. Is there any difference of distance between using jammer indoor and outdoor?
Yes. Generally speaking,outdoor signals is bigger than the indoor signal.Thereby,the shileding effect is worse outdoor.Strictly speaking,whether using indoor or outdoor,the effective distance of interception is related to the surrounding environment as the distance between different base statins,positions of installstion,ect.
 4. Is the jammer has the same effect to GSM cell phone and CDMA cell phone?
The capacity of anti-interference of CDMA is much better than GSM cell phone.So the interference effect for GSM cell phone is better than CDMA cell phone.
 5. The shell of jammer will become hor affer working for some times.Does the long-time keeping in working condition will damage the machine itself?
It is very normal.When design,We are thinking of taking use of the conductivity of metal shell to help the heat sinking during our designation,by this way,the machine can be kept in good working condition for long time.
6. Working Distance of Signal Jammer? 
The working distance is the most concerned point for the buyers. Usually, the distance is 10 m to 1km. We have the basic type that support the typical coverage is 10 meters. For the professional Jammers, the working range on the highway is 1000m, while it is 500m in the center of city