1 CSN has strict quantity restrictions and packaging requirements for the carriage of following items. They may be accepted as checked baggage only in accordance with CSN’s regulations and with the consent of CSN.
a) Precision instruments and electric appliances shall be transported as cargo. If transported as checked baggage, such items must meet the factory packaging or similar packaging standards and the free baggage allowance will not apply to such items.
b) Sporting equipment, including firearms and ammunition for hunting and sporting purposes. The transportation of such firearms and ammunition shall be in accordance with applicable laws and regulations as well as CSN’s rules.
c) Sharp and blunt objects other than controlled knives, such as swords, knives, handicraft knives, kitchen knives, fruit knives, table knives, scalpels, scissors, steel files, axes, sticks, hammers and other similar articles belonging to antiques or tourist souvenirs, etc.;
d) Dry ice for packaging fresh items;
e) Alcoholic beverage, liquids hand-carried by passenger(s);
f) Diplomatic envelopes, confidential files;
g) Pets or service dogs that meet CSN’s rules;
h) Electric wheelchairs used by passengers during air travel;
i) Baggage with irregular size and dimension (not includes certain types of special baggage such as snow sledding).
2 Seat-taking Baggage
Items that are too big or too heavy to meet CSN's unchecked baggage requirements should be taken into the cabin as seat-taking baggage. Such items will be charged for extra fees separately and will be kept by the passenger(s).
3 Fresh and perishable items
Fresh and perishable items are those that will lose their intrinsic properties or qualities and thus cannot perform their intended functions without meeting their required storage conditions. Items included are medicines (vaccines and pharmaceuticals), electronic components, fruits, vegetables, meat, fish, seafood, dairy products, flowers, pastries and other items vulnerable to unsuitable storage conditions. Fresh and perishable goods must have appropriate packaging, and the packaging must not contain liquid substances such as water; The outer packaging of items that are afraid of pressure should be strong and resistant to pressure; There should be air holes on the packaging of articles requiring ventilation; Containers for refrigerated items should be tight.
4 Aquatic products
Aquatic products are only eligible for transportation on domestic flights. The packaging materials of aquatic products should be corrugated cartons, foam boxes, plastic bags, tape and other auxiliary materials. The packaging should be secured with no leaking, emission of undesirable odor, and will not damage the passengers' baggage, aircraft facilities, equipment and other cargo. The packaging should withstand sudden changes in temperature and pressure and must have a certain compressive strength to ensure that it will not be damaged during normal air transportation.
5 Dry ice
No more than 2.5 kg of dry ice per passenger is allowed for the preservation of live items. Dry ice packages should have air holes, and when used as checked baggage, the baggage should be labeled "solid carbon dioxide" or "dry ice", and the net weight of dry ice or indicated that its net weight does not exceed 2.5 kg.
6 Mercury barometer or mercury thermometer
Each representative of a government weather bureau or similar official agency may carry only one barometer or thermometer, mercury filled as unchecked baggage, and it must be packed in a strong outer packaging, which will prevent the escape of mercury from the package.
Medical or clinical thermometers which contains mercury can only be transported as checked baggage. One person can check-in only one such thermometer in its protective case.
7 Electronic devices and Spare batteries
Passengers carrying portable electronic equipment powered by lithium batteries are required to meet the principle of personal use, and spare batteries must be compatible with the portable electronic equipment.
Portable electronic equipment and spare batteries with lithium metal batteries that contain lithium that do not exceed 2 grams, or lithium-ion batteries that rate energy do not exceed 100Wh, are not required to be declared. Each person may be allowed to carry a maximum of 15 portable electronic devices and no more than 20 spare batteries as un-checked baggage.
Portable electronic equipment and spare batteries that contain lithium metal batteries that exceed 2 grams but not exceed 8 grams, or lithium-ion batteries that rate energy exceed 100Wh but do not exceed 160Wh, are required to be declared at the time of check-in or boarding. Such kind of lithium metal batteries are only permitted for use in portable medical electronic devices (PMED), and spare batteries can only be carried in 2 pieces and only as un-checked baggage.
If the lithium content of the lithium metal battery exceeds 0.3g, or the rated energy of the lithium ion battery exceeds 2.7Wh, the electronic device in the checked baggage must be completely turned off (not in sleep or hibernation mode) and protected against damage, and the device must be prevented from accidentally starting.
8 Electronic Wheelchairs
For electric wheelchairs or walkers equipped with lithium batteries (hereinafter referred to as electric wheelchairs), passengers should contact CSN in advance and provide the model information of the installed battery and the manufacturer's operating instructions. Batteries must meet all test requirements of the United Nations Manual of Tests and Criteria, Part III, Section 38.3.
If the battery design is sufficiently protected against damage to the battery and can be securely secured to the electric wheelchair, the battery poles must be protected against short circuits (e.g. the battery is enclosed in a battery case), the circuit can be disconnected according to the manufacturer's instructions, and the electric wheelchair can be transported as checked baggage; If the design does not provide adequate protection for the battery (for example, the battery is simply external or cannot be securely secured without an additional protective case), the passenger should remove the battery as hand luggage according to the manufacturer's instructions, and the battery removed from the wheelchair cannot exceed 300Wh.
Each passenger can carry a maximum of one spare battery not exceeding 300Wh, or two spare batteries not exceeding 160Wh each, as hand luggage. Batteries used as hand luggage must be protected, such as placing each battery in a protective case.