At present, China has set a special frequency range for different types of radio transmission equipment, and not all frequencies can be legally used in China. In other words, all radio transmission equipment sold or used in its territory will specify different frequencies.

The basic process of toy CCC certification and its required materials and introduction of six categories of toy products related to CCC certification.

Socket CCC testing standard GB2099.1-1996 \"Plugs and sockets for household and similar purposes Part 1: General requirements\" GB2099.2-1997 \"Plugs and sockets for household and similar purposes Part 2: Special requirements for appliance sockets\" GB1002-1996 \"Types, basic parameters and dimensions of single-phase plugs inserted into sockets for household and similar purposes\" GB1003-1999 \"Types, basic parameters and dimensions of three-phase plugs and sockets for household and similar purposes\"

With the continuous improvement of domestic living standards in China, the floor-sweeping robots that have been sold in the European and American markets have entered the homes of ordinary people and are accepted by more and more people. However, ordinary consumers are paying more and more attention to the safety and quality of sweeping robots. Sweeping robots must pass the test and certification of relevant national authorities before they can enter the market.

There are many types of batteries, including rechargeable batteries, disposable batteries, button batteries, and solar batteries. Although the battery is inconspicuous, it still has a high safety risk. There are many items that need to be tested during battery detection, especially when the battery is exported to foreign countries for IEC certification standards, the battery safety indicators need to be tested to ensure The batteries that everyone is using and exporting will not cause hidden safety hazards and malfunctions for users. Safe and high-quality batteries will not only be popular in the country, but also quickly open up foreign markets and become popular in foreign markets.

Nowadays, rechargeable lithium batteries such as mobile phones, laptop computers, camcorders, and remote control toys are already very popular electronic products, so the demand for lithium battery cargo transportation is increasing. UN Handbook for the Transport of Dangerous Goods \"Handbook Section 38.3 Section 3 is the generally accepted UN38.3 certification, which is a UN regulation specifically formulated for the transportation of dangerous goods requiring lithium batteries to pass a high degree, simulation, high and low temperature cycles, vibration test , Impact test, 55C ring temperature short-circuit test, impact test, overcharge and forced discharge test. UN38.3 is suitable for air transportation and daily storage and other processes.

The multimedia all-in-one machine integrates infrared touch technology, intelligent office software, multimedia network communication technology, high-definition flat-panel display technology and other technologies into one, integrating a projector, electronic whiteboard, computer (optional), TV, touch function, etc. Multi-functional interactive devices with multiple devices in one, which upgrade the traditional display terminal into a full-featured human-machine interactive device.

With the change in the level and methods of government affairs, more and more law enforcement recorders are used in the daily law enforcement office process. Law enforcement personnel must be equipped with law enforcement recorders for law enforcement. Law enforcement recorders can protect the personal rights and interests of law enforcement personnel and law enforcement personnel.