Regarding HS code and duty rate of face masks in some major countries, we collected some information in main trade partners (US, Japan, EU, Korea, Taiwan, Australia, New Zealand) of China. This is aimed at the face masks such as personal protective masks without special function components, including medical face masks and disposable face masks. All of below information were published by the custom officially.
According to Harmonized Tariff Schedule of the United States, HTSUS, the HS code of face masks in the US is 6307909889. And the duty rate imported from China is 7%. Regarding tariff imposed, according to announcement from the United States Trade Representative on March 12, 2020, the tariff is excluded for the face masks belonging to this HS code since September 1, 2019. Since then, all the face masks imported from China has been exempted from tariff. You can refer to the below chart for more information.
The HS code of face masks in Japan is 630790029. The duty rate imported from China is 4.7%. To learn more, see below:
The duty paragraph for face masks imported from China in EU is 6307909899 and the duty rate is 6.3%. You can see below for more information:
The duty paragraph for face masks imported from China in Korea is 6307909000, and normally, the tariff is 10%. However, from March 18, 2020 to June 30, 2020, Korea has been suspending imposing tariff for face masks from China(0 tariff currently), see below for more information:
The HS code(also referred to as duty paragraph) of face masks imported from China mainland in Taiwan is 63079050.
And, the duty rate for face masks imported from China mainland is 7.5%. However, from February 27, 2020 to May 26, 2020, provisional tax rates (also referred to as“flexible tax rate”in Taiwan area) for face masks was carried out in Taiwan area, i.e. the tariff is zero. You can see below for more information:
The HS code of face masks imported from China in Australia is 63079099 and the duty rate is 5%. See below for more information:
The HS code of face masks imported from China in New Zealand is 63079028. Zero tariff is applied to the face masks imported from China according to “New free trade agreement”. See below for more information:
If an end user will specify the copper thickness of a printed circuit, there must be many reasons. For example, current carrying capacity, but copper thickness also directly impacts thermal performance and impedance. All these are vital properties, which have a great influence on the functionality and reliability of a flexible circuit.
At the point, it is important to understand the functional needs driving a copper thickness requirement.
Some of the common functional requirements could be:
1.Minimum thickness in a connector area to assure robust contact.
2.Adequate current carrying capacity directly related to the cross sectional area of the trace.
3.Proper conductivity, a function of cross sectional area and metal type of the trace.
4.Proper impedance in high speed circuits driven by the cross sectional area of the copper, the surrounding dielectric constant, and distance from signal trace to ground plane.
5.Thermal properties directly related to metal type and trace profile.
Copper weight is used in the industry as a “thickness” measurement. Circuit manufacturers commonly purchase copper foil with descriptions of ½ ounce, 1 ounce, 2 ounce and so on. The number is the weight of copper in a square foot of foil. Also, +/- 10% is the industry accepted tolerance for copper foil thickness from the material supplier.
Drawing specifications will frequently define a flexible PCB copper thickness using weight. For example “circuit to be 1 ounce copper”. This can lead to some ambiguity, as copper plating on double sided circuits can easily add an ounce of copper to the surface of a trace. So by specifying thickness in this fashion, it is not clear if this is intended as a finished thickness or an original thickness. Additionally, controlled impedance designs work best when copper plating is restricted to the vias with no copper plated on the surface of the traces. This will minimize trace thickness variability and suggests a specific product category requiring a process known as “Pads Only Plating” or “Button Plating”. For controlled impedance designs, one of these terms should be called out in the drawing notes.
What affects final copper thickness is the variety of manufacturing processes that add or subtract copper thickness. Micro-etching is a common “cleaning” process used to prepare a surface for plating or coating. This process removes a small amount of copper. Likewise copper plating will add thickness. The circuit fabricator will directly measure added (or subtracted) thickness in mils (1 mil =.001”) or microns (25 μm=.001”).
The most accurate method for determining thickness is to do a micro section. This is a destructive test, so it is common to use coupons located in unused areas of the processing panel. These coupons are located and sized to be “representative” of the circuitry copper thickness. Copper thicknesses will vary slightly across a panel depending on current density from electroplating. Current density can be a function of the copper trace pattern so differences among various part numbers will occur. As a general rule, copper plating thickness will tend to be thinner on the outer edges of the panel and thicker toward the center.
In summary, when defining the specific copper thickness for an application it is highly recommended to start with a discussion of the myriad functional requirements. Also, the manufacturer can help recommend copper thicknesses and tolerances as well as the best methods for measurement.
Best Technology is the professional vendor of flex circuits, from 1 layer to 10 layers, 2 layers rigid-flex circuits to 16 layers rigid-flex circuits, and one-stop service including components purchasing, assembly, IC programming, testing. Choose us, you can always enjoy our best service at a good price.
Global demand for supplies used by our customers to treat and help protect people, such as respirators, is currently exceeding supply. Best Technology expects demand for respirators to outpace supply for the foreseeable future.
Throughout all the recent developments, Best Technology is working hard to uphold the commitments we made to supporting your business. We are very focused on protecting the health and safety of our workforce while maintaining the ability to keep serving you.
With more than 10 years of domain expertise in the industries we serve, we are here to help you adjust to whatever may happen next.
The COVID-19 pandemic continues to affect all of us, and all Best Technology colleagues are working around-the-clock to help provide critical tools for the fight. Our current focus: supporting health care and front-line workers as well as our regular and new customers around the world by providing products they need to help protect their lives.
We are seriously in choosing partners who can provide various kinds of respirators as well as medical products:
The partners who can double their global output rate to nearly 100 million respirators per month are in our priority;
Also, we anticipate doubling global capacity of our partners to almost 2 billion respirators in the next 12 months.
We have not increased the prices we charge for our respirators in this crisis.
Our efforts are guided by our value of Caring – for our people and their families, our consumers, and importantly, for those most in need right now. We want to share a few of the ways that we are responding to this global health crisis.
Moreover, after our efforts, all of our face masks, KN95 masks and all of other medical products have passed GB2626-2006 and CE standard. You can also find out the certificates from the above website.
Anything I can do for you? If there is a need, contact us anytime. Our sales team will be here to reply you instantly. Please keep safe and take good care of yourself and your families. Come on, our friends, wish the pandemic will end asap and everything can return to normal soon.
China’s fight against COVID-19 epidemic has achieved victory at this stage. Infected patients were found in 337 cities in China but now only 28 cities remaining patients in cure. So far till March 31st, there were 82545 confirmed cases in China, while 76225 cured and only 3006 remaining now. Most importantly, many of the areas finds only one figure number increase and others stop increasing for quite some days. If the first half of COVID-19 fighting is inside China national territory, the second half will be on the international stages while noticeable growth on COVID-19 infected cases are spreading all over the world now.
Best Technology has been collecting the measures in China on epidemic controls so in order to provide a more objective and useful reference for overseas professionals which we hope they could refer to and protect better themselves from the COVID-19.
During the height of the outbreak, trains didn’t stop at the disease’s epicenter, Wuhan
Trains, as well as other tightly packed forms of transportation, can serve as vectors of illness. The more people, the more closely packed, and the more poorly ventilated the space, you can imagine that’s a bad situation because there are a ton of people, they’re in very close quarters, and they’re a totally captive audience. Cutting off transportation was considered on the top three measures to contain the spread of the virus.
China built new hospitals in a rush, with workers toiling night and day to get them done.
China built two new 1,000-1,300-bed hospitals to fight the corona virus, one created in six days, and the second in 15 days, using prefabricated modules.
Corona virus testing was easily accessible and free
In China, patients who were confirmed to have the corona virus were either sent to an isolation center or hospital. The government also made clear that testing for the new virus was free, and COVID-19-related charges that weren’t covered by a person’s insurance would be paid for by the government.
The country implemented large-scale contact tracing in the early 2000s
During the SARS outbreak in 2002-2003, China set up large-scale surveillance systems that included contact tracing, a front-line public-health strategy that involves identifying and following up with people who may have come into contact with an infected person.
The country postponed non-urgent medical care and moved many doctor’s visits online. Not all patients were given the critical care they needed during the outbreak, though
In China, elective surgeries and other non-critical doctors’ visits were delayed, and many medical services were moved online. Someone in one place said 50% of their consultations are now done online; they just moved a whole bunch of what was normally done physically online to be able to keep the regular health services going.
Centers for Disease Control exploring a way of therapeutic plan combing Traditional Chinese medicines and Western medicines.
The combination of Traditional Chinese medicines and Western medicines had been proven effective on the SARS fights. Doctors of traditional Chinese medicines had volunteered for consulting and participating into the virus fights.
China used technology that aims to trace every single COVID-19 case
Traditional epidemic prevention manufacturers speed up and similar production lines integrating to make more necessary products
Many medicinal and pharmaceutical substances manufacturers launched automation assemble lines and increase manpower to speed up the mass production of necessary drugs, masks, ventilators to meet the huge consumption during virus fighting. Many of these companies arranged 24-hour shifts for maximizing the production.
Meanwhile other manufactures such as automotive OEM had change their assemble line into masks productions machines.
At the blast of COVID-19, returning Chinese carrying back epidemic products from overseas as much as they can
Returning travelers carried extra masks on their flights back to China and donated them to the hospital and governments in need. Some overseas Chinese unions also had helped ordering these products and sending to China.
Chinese citizens did their part to curb the disease’s trajectory on an individual level, too, though we may never know the true scale of their complaints or sacrifices in this outbreak.
In contrast to reports in the US of people clamoring over the last hand-sanitizer, the attitude of people in China was that they were all in this together. People stay at home for self-quarantine, lockdown and response to the postpone returning to work and school.
People who thought they might have the corona virus could go to one of the nation’s many fever clinics
People who thought they had the novel corona virus in China would often be sent to a special fever clinic, which have been widespread since the country dealt with an aggressive SARS outbreak in 2002. Their temperature would be taken, and they’d discuss their symptoms, medical history, travel history, and any prior contact with anyone infected with a doctor.
If necessary, patients might receive a CT scan, which is one way to do an initial screening for COVID-19. Each machine did maybe 200 a day. 5-10 minutes/scan. A typical hospital in the West does one or two an hour.
People quickly shifted jobs in order to assist during the outbreak
When it came to the non-medical response, there was a nationwide sense of solidarity with Hubei. Other provinces sent 40,000 medical workers to the center of the outbreak, many of whom were volunteers.
Workers in transportation, agriculture, and clerical positions were encouraged to new positions such as delivery, courier and epidemic prevention manufacturing, too.
While staying home, it’s been relatively easy for Chinese people to get extra food and supplies
China essentially mandated a country-wide shut down, demanding that every Chinese resident stay home until the curve was flattened. But in West, unlike China, a country-wide shutdown would be difficult to enforce.
Fifteen million people had to order food online. It was delivered. Yes, there were some screw-ups. But few said: every now and again there’s something missing from a package, but food supply is pretty much normal via ordering online.
Since electronic products tend to be shorter, smaller, lighter and thinner, flex pcb is more and more popular with people and the demand is increasing.
FPC coverlay is a functional film normally used in PCB industry, and it is used to protect copper foil from oxidation, cover for surface treatment subsequently and play the role of solder mask in SMT process.
Speaking of fpc coverlay opening, that is, at bare copper foil point, open a hole in coverlay according to the shape of design solder pad, so that fpc traces or traces at golden finger or solder pad can be exposed, which contributes to subsequent surface treatment by connection and placement.
We often adopt 2 ways for fpc coverlay opening. One is to open a tool. This is the first choice, very suitable for production in large batch. The other is uv laser cutting, very suitable for prototyping and production in small batch.
These are what we have sorted out about fpc coverlay opening. Hope it is helpful to you. If you are still confused, please contact us, we have professional staff who can answer your inquires for 24 hours a whole day.
During PCB design, FPC flexibility plays an important part and FPC flexibility is influenced by the followings:
(1)From the perspective of FPC material itself, FPC flexibility is influenced by the followings:
First, molecular structure and direction of copper foil(i.e. copper foil types);
Folding strength of RA copper is obviously superior to ED copper.
Second, thickness of copper foil;
In terms of the same type, the thinner the copper foil, the better the folding strength.
Third, types of adhesive used by substrate;
As a general rule, the flexibility of epoxy glue is better than that of acrylic adhesive. So, if high flexible material is required, epoxy glue is recommended. Moreover, the adhesive with high tensile modules can improve flexibility.
Fourthly, the thickness of adhesive;
The thinner the adhesive, the softer the material. Thin adhesive can improve FPC flexibility.
Fifth, insulation substrate.
The thinner the insulation substrate(PI), the softer the material. Thin insulation substrate can improve FPC flexibility. And FPC flexibility will get better if PI with low tensile modules is used.
In conclusion, for material, type and thickness are the most important 2 factors influencing FPC flexibility.
(2)From the perspective of FPC technology, FPC flexibility is influenced by the followings；
After substrate is pasted with coverlay, good symmetry of material on both sides of copper foil can improve flexibility. This is because they bear the same stress when bending. PI thickness on both sides of PCB tends to be the same, and thickness of adhesive on both sides of PCB tends to be the same.
Second, control of lamination technology.
During coverlay lamination, the adhesive is required to be completely filled into the middle of the trace, and there can be no delamination.If there is delamination, it is equivalent to bare copper bending, which will reduce the number of bending.
If you have any queries, comments or suggestions on FPC flexibility, feel free to contact us, and we have 24-hour online customer services.
The most frequently asked question we received regarding fpc is “how much can I bend a fpc?” So, we would like to share how to calculate bending radius of fpc with you today.
When fpc is bending, the stress borne by both sides of center line is different. Pressure is inside of bending face, while tension is outside. The stress has something to do with thickness and bending radius of fpc. Excessive stress will lead to delamination of fpc, fracture of copper foil and so on.Therefore, the laminated structure of fpc should be arranged reasonably in the design, so that the lamination at both ends of the center line of the curved surface should be symmetrical as far as possible. At the same time, the minimum bending radius of fpc should be calculated according to different applications.
The calculation method：R=（c/2）[（100-Eb）/Eb]-D Wherein：R=Minimum Bending Radius(unit:µm); c=Copper Thickness(unit: µm); D=Thickness of Coverlay(unit:µm); EB=Copper Elongation Desired(Measured as a Percentage) Copper elongation desired also differs among various types of copper.
A.The maximum copper elongation desired for RA Copper ≤16％
B.The maximum copper elongation desired for ED Copper ≤11％
Moreover, value for copper elongation desired for the same material will be different in different applications. For one-time bending, the limit of the critical state of fracture is used (for RA Copper, the value is 16%). For bending installation design, use the minimum deformation value specified by IPC-MF-150 (10% for RA Copper).For dynamic flexible applications, copper elongation desired is 0.3%. For magnetic head applications, copper elongation desired is 0.1%. By setting the copper elongation desired, the minimum bending radius of fpc can be calculated.
Dynamic flexibility: In these applications, copper functions through deformation. For example, the phosphorus and copper metal dome in the IC card seat, i.e. the part where the IC card contacts with the chip after being inserted, and the metal dome is constantly deformed in the process of inserting. This kind of application is flexible and dynamic. If you have any queries or comments on bending radius of fpc, contact us anytime.
This is the simplest flex pcb. Generally, base material and adhesive and copper foil are used as raw materials, or protective film and adhesive are used. Firstly, copper foil needs to be etched to get traces required. Protective film needs to be drilled to expose pad. Both are combined by using rolling process after cleaning, then the exposed pad should be electroplated with gold or tin for protection. In this way, the flex PCB is finished and can be punched into small flex pcb.
The via holes are added to make multilayers flex pcb different from 1 layer flex pcb, so that copper foil in each layer can be connected. Generally, for base materials and adhesive and copper foil, the first processing technique is to make via holes. The base materials and copper foil should be drilled firstly and then electroplated with copper of certain thickness after cleaning. Thus the via holes are finished. The subsequent manufacturing techniques of multilayers flex pcb are almost the same with 1 layer flex pcb.
For example, here is the standard flex stack up for 4-layer flex pcb
There may be some differences among the stackup for 1 layer flex pcb, 2 layers flex pcb and multilayer flex pcb, but similarities also exist among many manufacturing techniques of flex pcb. Different techniques are just added in some basic places, so as to be applied in different fields.
Tomorrow March 8th, 2020 will be the Women’s Day! As it’ll be Sunday, so everyone in Best Technology get the gift today: One box of facial mask, one bottle of eye cream, and one bottle of moisturizer
We hope every lady in Best Technology keep happy, beautiful, while they’re working so hard, even working in middle night, in order to give our customers immediate reply. This is one of reason why you can see email reply within one hour sometimes even in the evening!
It’s the first time that every girl in Best Technology take a photo with a face mask! Everyone in Best Technology want the coronavirus to be finished ASAP, so that everyone doesn’t need to have a face mask and global economic turn back to normal level. At that time, we can take a photo again so that you can see the smiling face of our girls😊 and we believe that day will come in soon!
This is another test for China and the world community
after SARS. At this moment, any slamming, taunting, fanning, and gloating are
all manifestations of lack of humanity. The virus does not recognize the
country, nation, race, rich or poor. There is no difference in virus
China’s powerful system and the
effective measures it has taken to prevent and control novel
coronavirus-related pneumonia are rarely seen in the world, Director-General of
the United Nations’ World Health Organization Tedros Adhanom Ghebreyesus said
Ghebreyesus made the remarks while
meeting with State Councilor and Foreign Minister Wang Yi in Beijing.
The WHO and the international
community highly appreciates, and fully affirms the decisive measures the
Chinese government has taken to deal with the outbreak and also thank China for
its tremendous efforts to curb the spread of the contagion, he said.
China set a record in identifying
the pathogen in a short time following the outbreak of the contagious disease,
Ghebreyesus said, and he praised the country’s timely sharing of the virus’ DNA
information with the WHO and other countries.
I don’t know the source of the so-called news of many foreign friends. As a Chinese, I saw the initial panic, and I also saw the current stability.
In response to the GVM’s call, the school has delayed the start of school, and most companies have extended the Spring Festival holiday from original Feb 2nd to Feb 9th and resume on Feb 10th. This is not a sign of lack of confidence in controlling the virus, it is one of the measures to put people’s lives first.
Everyone knows that this is the most effective way to
control the spread of the virus.
I went to supermarkets, fruit shops, etc., and there was no snap-up like it was fabricated by some media. Prices have not skyrocketed. The price department is also strictly controlling the prices of daily necessities to protect people’s daily lives.
Relevant departments have made the unified deployment of
some protective supplies such as masks to ensure timely and adequate supply.
Which country can make such an appropriate response in the first place?
It’s really boring to stay at home every day, but who
wants to joke with life? As someone who is very busy working every day, having
more time to spend with his family may also be a good thing. After all, too
many people complain that the Spring Festival holiday in just a few days is not
The internet is well developed. Although I can’t meet my
relatives, friends, colleagues to celebrate the Spring Festival, isn’t it
convenient for video chat, using WetChat of Facetime for people around the word?
Why not give up the temporary joy in exchange for the safety of life?
We are very grateful to the medical staff, community
service staff, and social service staff who gave up their holidays and took
great risks in helping patients, maintaining social stability and creating a
more secure environment.
I am grateful for living in such a country. I believe that
every Chinese thinks so.
In such a severe situation, in order to eliminate the
virus as quickly as possible and ensure the safety of people’s lives, any
measures are reasonable.
Every Chinese should understand and understand.
People of all countries in the world who have experienced
various natural and man-made disasters should marvel at China’s timely and
As an international trade practitioner, I have sincerely
explained to each of my customers our current status. We don’t need to
whitewash or conceal anything, because we have done our best to do a good job.
I believe that the Chinese people will be able to
eliminate the disease as soon as possible. Because we eliminated more severe
SARS than this time in 2003, didn’t we?
Here everyone in Best Technology in China was in good health condition, and our office & facility will be opened on Feb 10th. During that period, our sales reps. will try to reply the email ASAP and thanks for the caring from all of our customers around the word! Much appreciated!