Airport Security Instructions

After a serious violent and terrorist case at Kunming Railway Station in Yunnan, Malaysia Airlines Flight MH370 lost contact three days later, and catastrophic accidents occurred frequently. What caused these misfortunes? We, who are always side by side with time, can hardly predict what will happen in the next second. Can we only bear it silently? the answer is negative. Unpredictable, but seek prevention. Improve security and ensure safety.

A bottle of water "hides" through Malaysia Airlines security check and was brought on board

It has been three days since the Malaysia Airlines flight lost contact, and the media broke out. A passenger who took the MH370 one day in advance did not find a bottle of water at the airport. Ms. Jiao took her parents and children to travel abroad to transfer in Kuala Lumpur. Because the child's visa expired on the 8th, she changed her flight to MH370 on the 7th. She recalled that when she took the same flight on the 7th, she discovered potential safety hazards. "We threw two bottles of water at the security check, but when we boarded the plane, we found that there was another bottle in the bag. They didn't find it."

Security inspection is an important step to ensure the safe driving of planes, trains and other vehicles. During this process, all prohibited items will be prohibited from being carried, otherwise, the possibility of traffic accidents will be greatly increased. Water is one of the prohibited items. Being able to "hide" the security check and get on the plane reveals that the airport security check system is in urgent need of upgrading.

How to quickly pass the security check?

In order for you to pass the security check as soon as possible, please do the following:

1. Please do not bring prohibited items;

2. Please put the living knives in the luggage for consignment or not to carry.

3. Please do not bring liquid items such as beverages and restricted items such as matches and lighters; 4. Check baggage as much as possible during the registration process; 5. Prepare relevant boarding documents before accepting the security check; 6. In case of difficulties, please Promptly submit to security personnel for help;

How to carry electronic equipment with lithium batteries?

Improper transportation of lithium batteries may cause air transportation accidents. In order to ensure the safety of life and property of you and others, please follow the relevant regulations when carrying lithium battery powered devices and lithium batteries, and pay attention to the following:

1. Please put electrical equipment (such as digital camera, video camera, walkie-talkie, electric shaver, etc.) in your hand luggage, not in checked baggage.

2. Please install the battery on the electric equipment and protect it to avoid accidental startup of the electric equipment during carrying.

3. If you carry spare batteries, please protect the single spare batteries against short circuit, such as sticking the exposed electrodes with adhesive tape or packing each battery separately in a plastic bag or protective bag.

What are the precautions for carrying liquid items on domestic flights?

1. Only a small amount of cosmetics for travel (except shampoo and shower gel) can be carried. Each cosmetic is limited to one piece. The volume of its container must not exceed 100 ml, and it should be placed in a separate bag for inspection. Please be sure to confirm the following when you are ready to travel:

i. Whether the cosmetics you carry are used during the flight, if not, please put them in the checked baggage.

ii. Whether the volume of each cosmetics container is 100 ml of light rain. If not, please replace it with a container of less than 100 ml, or put it in checked baggage.

iii. Whether the cosmetics do not want to be damaged because they will be given to others. Because the cosmetics that you carry with you are subject to bottle opening inspection, if you do not want the packaging to be damaged, please put it in your checked baggage. iv. Alcoholic articles are not allowed to be carried with you. Please check them in your checked baggage.

2. If you are accompanied by an infant, please apply to your airline at the time of ticket purchase. The airline will provide liquid dairy products for free. The liquid dairy products you prepare yourself will not be allowed to be carried with you, you can put them in checked baggage or check them out, or handle them yourself before undergoing a security check.

3. Diabetics or other patients may carry the necessary liquid items, such as liquid medicines, liquid sugar-free foods, etc., but the number should be limited to the amount used during the air travel, and show the hospital or doctor's certificate.

4. If you come from overseas and need to transfer to a domestic flight at an airport in China, and carry tax-free liquid items purchased overseas, please put the liquid items in a transparent plastic bag with the bag intact and sealed, and you need to show Shopping voucher. If the sealed plastic bag containing liquid items is damaged or you cannot present your shopping voucher, you will not be allowed to carry the corresponding liquid items with you on domestic flights unless the volume and type of the liquid items you carry meet the relevant requirements for taking domestic flights.

After the violence in Kunming, security inspections at various airports have been upgraded

After a serious violent and terrorist case occurred at Kunming Railway Station in Kunming, Kunming Airport increased the level of security inspections and increased the rate of passenger physical inspection and baggage unpacking. In addition, Capital Airport, Shanghai, Shenzhen, Xi'an, Nanchang and other airports have increased explosion-proof inspection More detailed hand inspection. Passengers are advised to arrive at the airport more than two hours in advance to avoid delays.

After the incident, Kunming Changshui International Airport has comprehensively upgraded its security level. The airport reminds passengers who come to Kunming Changshui Airport for flight check-in: due to the upgraded security level, please come to the airport for check-in procedures two hours in advance.

Capital Airport has strengthened security measures from the day before yesterday to increase the level of security. The airport will carry out explosives inspections on passengers ’bags and more detailed manual inspections. Some passengers may be required to take off their shoes for inspection at the security inspection area.

The two major airports in Shanghai have increased the patrol force in the terminal building yesterday. Part of the gates at the departure and arrival floors are closed. The security check of passengers before boarding is significantly strengthened. Coats and coats are required to be taken off for screening. Women in boots must also take off Checked. According to the description of outgoing passengers, the portable charging equipment, voice recorder and other equipment must be taken out and checked by the security inspector.

Xi'an Xianyang International Airport once again upgraded the security level of the heated airport. At each gate entrance of the departure halls of the two terminals, explosion-proof detection and inspection equipment and operators are installed to ensure that each passenger can get it before entering the terminal. Explosion-proof safety inspection to eliminate hidden dangers outside the terminal. In addition, the airport has increased the strength of security inspection staff to improve the level and standards of the security inspection of the personal, cargo and flight area crossings of the security inspection channel, and strictly prevent the contraband from being brought into the control area and aircraft.

Nanchang Changbei Airport has launched a three-level early warning response mechanism. Passengers will be subjected to explosion-proof spot checks when entering and leaving the airport. Once they encounter an alarm sound through the security check, or wear unusual clothes and other abnormal conditions, they will be required to remove the belt and take off their shoes for inspection.

Airport security, prohibited items

1. Firearms, military or police equipment (including main parts), including: military guns, official guns: pistols, rifles, submachine guns, machine guns, anti-riot guns, etc. Civilian guns: air guns, shotguns, sports guns, anesthetic injection guns, starting guns, etc. Other guns: sample guns, props, etc. Ordnance, police weapon: baton, military or police dagger, bayonet, etc. Guns and equipment prohibited by the state: steel ball guns, tear gas guns, stun guns, electric shockers, defensive devices, etc. Imitations of the above items.

2. Explosive items, including: ammunition: bombs, grenades, flares, incendiary bombs, smoke bombs, signal bombs, tear gas, gas bombs and bullets (empty bombs, combat bombs, inspection bombs, coach bombs), etc. Blasting equipment: explosive, detonator, fuse, detonating cord, non-electrical detonating system, blasting agent, etc. Pyrotechnic products: fireworks, fireworks, firecrackers, etc. Imitations of the above items.

3. Controlled knives: refer to the knives listed in the "Interim Regulations on the Control of Some Knives" promulgated and implemented by the Ministry of Public Security with the approval of the State Council in 1983, including daggers and triangular blades (including triangular blades for mechanical processing), Knives with self-locking device and single-edged, double-edged, triangular prismatic knives shaped like daggers but longer than the dagger. The Tibetan knives, waist knives, boots knives, etc., which ethnic minorities need to wear and use because of their living habits, are controlled knives, and they are only allowed to be sold and used in ethnic autonomous areas.

4. Flammable and explosive materials, including: hydrogen, oxygen, butane, etc. bottled compressed gas, liquefied gas; yellow phosphorus, white phosphorus, nitrocellulose (including film), oil paper and its products and other spontaneously combustible materials; metal potassium, sodium, Lithium, calcium carbide (calcium carbide), magnesium aluminum powder and other flammable items in contact with water; gasoline, kerosene, diesel, benzene, ethanol (alcohol), paint, thinner, rosin oil and other flammable solids; sodium peroxide, potassium peroxide, peroxide Various inorganic and organic oxidants such as lead oxide and peracetic acid.

5. Toxic products: including cyanide, highly toxic pesticides and other highly toxic materials.

6. Corrosive substances: including sulfuric acid, hydrochloric acid, nitric acid, liquid batteries, sodium hydroxide, potassium hydroxide, etc.

7. Radioactive items: radioactive isotopes and other radioactive items.

8. Other items that endanger flight safety, such as strong magnetization that may interfere with the normal operation of various instruments on the aircraft, items with a strong pungent odor, etc.

Hydroxypropyl Methylcellulose is soluble in water and some organic solvents. Its aqueous solution has surface activity. The solubility changes with the viscosity. The higher viscosity, the better solubility. The performance is different for different  hydroxypropyl methylcellulose HPMC. Hydroxypropyl methylcellulose HPMC solubility is not affected by PH value.


hydroxypropyl methylcellulose used in Plastic
-Used as forming release agent, softening agent, lubricant.


hydroxypropyl methylcellulose used inPolyvinyl Chloride (PVC) 
-Used as dispersing agent in polyvinyl chloride production and is the main auxiliary for the suspension polymerization of PVC

hydroxypropyl methylcellulose also used widely in the industry of leather, paper products, textile, fruits and vegetables fresh keeping, etc.



The molecular formula of hydroxypropyl methylcellulose is shown below


hydroxypropyl methylcellulose

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