Changzhou blockchain company

2. There are still many domestic enterprises that are actually doing blockchain technology, such as fun chain technology, Vientiane blockchain, energy chain group, complex US technology, Xinghe blockchain, Zhigui technology and medical chain group. They are all well-known enterprises with good technology in the instry. Internet giants basically have blockchain sections.

3. IBM, Microsoft, Oracle, Accenture, Tencent, Alibaba, Jingdong, network, etc. have all done it. Many large banks, including Ping An Bank, have also launched their own blockchain solution platforms or solutions. However, it should be added that large companies do not mean strong technical strength, because blockchain is still in the hot stage of concept in the world. Unicorn blockchain companies are likely to emerge in the future, such as EOS in foreign countries and honeycomb chain of Fanrong technology in China. The efficiency of TPS and packing into blocks may be much higher than that of large companies.

4. First of all, I'd like to introce some well-known blockchain companies in China, and then I'll personally evaluate which one is good. You can judge for yourself

1. Bubi blockchain company, which is engaged in the underlying technical services and instry solutions of blockchain. That is to say, an underlying blockchain is built, and an adaptation layer is built on it, so that enterprises can quickly establish commercial applications. The underlying blockchain is self-developed. The consensus mechanism is pbft, TPS is 5000 transactions per second, UnionPay is 2000 transactions per second, and bitcoin is 7 transactions per second. Of course, different underlying architectures lead to different performance, because Bubi's commercial blockchain pays more attention to performance. At present, Bubi is mainly used in digital assets, supply chain finance, supply chain traceability, public notary and other fields< 2. Bumeng blockchain. Theoretically, bumeng should be regarded as the proct line of Bubi, but Bubi is mainly engaged in the private chain, while bumeng is an alliance chain. So separately, bumeng is Bubi's layout in digital assets. The underlying technology is Bubi blockchain, but it encapsulates the blockchain according to the scene and provides API interface for enterprises. Enterprises issue their own assets on it. According to the characteristics of blockchain, they can freely circulate their assets. At present, some enterprises such as sunshine insurance, Qianxiang finance, crowdsourcing, Haohuo, etc. have joined in, and the assets in them include insurance policies, integral points, and so on Financial procts and so on. Finally, it is estimated that this platform will break through the barriers between assets, and the end users can freely use and transfer these assets. This is an interesting way for the blockchain instry, because it has both the opening of public chain and the security of private chain

Third, only chain, which is a commodity ID management cloud platform based on blockchain technology, provides enterprise users with commodity asset management, tracing, anti-counterfeiting verification, new supply chain management, etc. in the form of baas. Simple understanding is that only chain has done the content of "supply chain traceability" of Bubi blockchain

four, concentric mutual aid, concentric mutual aid is a mutual aid security platform, put some mutual insurance related information into the blockchain, and users can apply to become nodes, participate in bookkeeping, and maintain their own data

5. Xiaoyi is a decentralized network protocol based on blockchain technology, which digitizes the assets and interests of the real world, and carries out financial business such as registration and issuance, transfer transaction, clearing and delivery through point-to-point network

these five blockchain companies are probably well-known in China, and I personally recommend bumeng

first, bumeng uses the underlying technology of Bubi blockchain, which is very promising in the instry. It has the largest number of landing applications in China. Enterprises can not only use the blockchain technology at low cost (just call the interface, it seems that it is free), but also use the resources inside. Think about being on the same chain with many enterprises and docking resources in the future, User transformation should not be easy

Second, Weilian and Tongxin Huzhu focus on one field, and do not provide underlying technology and instry solutions. That is to say, if you are in this instry or can be used in the upstream and downstream of this instry, you can not be used in other fields. Take mutual security field as an example, zhongtuobang and zebra Club both choose bumeng. Of course, if it is an investment, you can consider it

Third, Xiaoyi, why not recommend Xiaoyi, because Xiaoyi is an open source project, and we all know the domestic business environment, especially when the instry is just beginning to develop, and the domestic market is different from that of foreign countries, Xiaoyi has gone through two rounds of ICO, which will be a great worry in the future operation, and at present, Xiaoyi has not been applied in practice, We have made a Fada platform, which has not been used by any company yet (guess it may be related to the factors of open source, who dares to open their data completely). Of course, the open attitude of Xiaoyi is worth encouraging. Although I guess the advantages and disadvantages of the code are well understood by peers, it is not clear

Fourth, why is there no recommendation for Bubby? Bubby has raised 30 million yuan a while ago, because Bubby is more open and has more resources. Of course, if the business requires high privacy, it can also choose Bubby blockchain

finally, for all my hard work, choose me!

5. We attach great importance to the fact that the climate is getting worse year by year.
the solar system is an aggregate organism:
our planets, such as the earth, mercury, Venus, Mars, Jupiter, Saturn, Uranus, Pluto, the moon, various satellites, and more than 3000 asteroids, do not exist alone. On the contrary, they gather together to form small parts of the solar system. They perform different tasks in a way of division of labor and cooperation. They are dedicated to procing energy for the sun, storing energy and providing energy. Dark light, X-ray and radio waves are electromagnetic radiation with negative charges. They travel through space to the sun and are absorbed into the solar body by the black hole (breathing mouth) of the solar body, Nuclear chain explosion. The sun obtains useful energy through nuclear chain explosion, which constitutes the core of the solar body, with a constant bioenergy of about 15 million degrees Celsius. What's superfluous is light, X-rays, and no money radio waves, which are released into space from around the solar body. Electromagnetic radiation is used to travel through space to reach the earth and various planets. Energy is used to proce and store fuel and gas for the sun. It can be seen that the necessary energy of the sun comes from the dark light, X-ray and radio emitted by the earth and various planets, which are electromagnetic radiation energy with negative charge. The necessary energy of the earth and all kinds of planets comes from the light, X-rays and radio waves released by the sun, which are electromagnetic radiation energy of positive charge. There is the exchange of energy between the sun and the planets, which is the energy of electromagnetic radiation energy of negative and positive charges passing back and forth. With the development and utilization of electronics and photonics, modern computer and network science, television science, electronic science, telecommunications science, aerospace science and other sciences have developed rapidly and infinitely
the light, X-ray and radio wave emitted by our earth ring the day are electromagnetic radiation energy, which is "opposite attraction". The darkness of the earth "attracts" the dark light, X-rays and radio waves of the moon, Mars, Jupiter and other planets and satellites are all magnetic radiation energy with negative charges. The electromagnetic radiation energy of yin and Yang is the energy of oxygen, methane, gas and natural gas released by countless plants and animals on the earth under the photosynthesis of yin and Yang. With the electromagnetic radiation energy of dark light, X-ray and radio wave, the sun attracts the energy of various planets. Only when the nuclear chain explosion occurs, can the sun release sunlight. The earth also releases the magnetic radiation energy of X-ray and radio wave for the moon and other planets to attract each other. Genes between the earth and the sun and various planets, such as between animals and plants on the earth: animals use plants as food and obtain useful bioenergy through biotransformation of animals. The surplus is waste (carbohydrates, etc.) and waste gas (carbon dioxide, etc.) discharged from the body. It can be used for plants to absorb and transform the bioenergy of plants and the excess oxygen of plants for animals to breathe. Oxygen and hydrogen combine to form water for animals to drink. Grain is for animals. The same principle applies between the sun and various planets, satellites and other planets, and between various planets and various planets. It can be seen that none of them exist alone. On the contrary, they all maintain a specified distance in space, and they are mutually beneficial all the time without touching and bumping, and they are working together for the immortality of the sun and all kinds of planets. If, the solar system organism does not have our earth to proce many kinds of gas main oxygen. Like burning coal, the sun lacks oxygen and extinguishes light and heat. In this way, our world has no energy and nothing
1. Refer to the theory of energetics / Joule: when an apple rises by one meter, it will split into two apples when it falls to the ground. When an apple rises two meters and falls to the ground, it can split into four apples. Joule also learned that the sun releases about 39000 megajoules of electric energy per second. Combined with Einstein's theory, every photon released by the sun can split two photon energies for every meter it passes through. Two photons can split the energy of four photons through a meter, and the split photons can do the same thing. The mass of our earth is one 300000 times that of all planets (except the sun). 39000 megajoules, of which 1 / 300000 is 0.13 megajoules. The sun is used for the earth. The distance between the earth and the sun is about 15 million kilometers. 0.13 MJ crossing 10m = 66.56 MJ × 15 million km = 9984 million megajoules ÷ Every 1000 coke = 1 kwh of electric energy, converted into about 1 kg of coal. About 99.84 million trillion kg of coal ÷ 1000 kg = 1 ton, the energy that the sun supplies to the earth is about 9984 million tons of coal per second × Two is the right number. It constitutes the environmental temperature of the whole earth, the constant temperature of the earth's core is about 5000 degrees Celsius, the energy necessary for the earth to rotate regularly, and the energy necessary for the earth to take the moon to rotate around the sun regularly. It also provides oxygen, various fuels and fuels for plants to form under photosynthesis. In addition, for animals to eat, plants as food, into a variety of fuel and gas. From the earth, dark light, X-rays and radio waves are electromagnetic radiation energy, providing about 998400 trillion tons of energy per second for the sun. Oxygen forms oxygen liquid about 70%, and gas, biogas and natural gas form combustion liquid about 30%. The earth's energy for various planets, moons and satellites is about 9984 million megatons per second. The earth's magnetism absorbs about 9984 million megatons of energy per second from the moon and other planets. The excess oxygen and hydrogen from the sun and various planets are combined into water, various fuels and various gases. The earth is stored up for the sun and various planets. This is the earth's oceans, rivers, lakes, groundwater, oil, natural gas and other natural resources
2. Referring to Newton's theory of mechanical universe, he replaced the law of motion and the law of universal gravitation with mathematical formulas, by which he could describe the motion of an object under force. According to the author's in-depth study, the electromagnetic "opposite attraction" gravity invisible to the naked eye must be pushed out by the universal electromagnetic "same-sex interaction", and the object must have a balanced force "gravity and thrust - opposite attraction and same-sex interaction" to make the object move regularly:
explain the earth's rotation:
the sphere from noon to sunset, It's the area where the sun supplies light and heat to the earth. The sun's electromagnetic thrust on this quarter of the sphere will be "same-sex cracking"
the sphere from sunset to midnight is the energy area where the earth releases heat energy and uses positive electromagnetic radiation energy to supply Mars, Jupiter and other planets with cold environment. This quarter of the sphere is opposite to Mars, Jupiter and other planets. Will proce "opposite attract" electromagnetic gravity
from midnight to the first appearance of the spherical surface of the sun, the earth attracts cold air such as hydrogen released by Mars, Jupiter and other planets, and combines with oxygen released by plants to form water (dew, frost, etc.). This quarter of the sphere, together with Mars, Jupiter and other planets, will proce the electromagnetic thrust of "same-sex collision"
in the sphere from the first appearance of the sun to noon, the heat energy radiated by the sunlight evaporates the water into water molecules and enters the air for the sun to magnetically absorb the detonated oxygen and hydrogen. Combine the oxygen and hydrogen to form raindrops, snow or hail to the ground. This quarter of the sphere, and the sun will proce "opposite attraction" of electromagnetic gravity
the whole earth has two electromagnetic "gravitation" and "thrust" (the same sex and the opposite attract each other), which make the earth rotate regularly. The sun, the moon and other planets rotate regularly, all of which are realized by the same principle
the natural phenomenon of pulling the earth to rotate: Although the magnetic force of the moon is about one sixth of the earth's body, its rotation around the earth is an obvious performance of pulling the earth to rotate while the magnetic force attracts energy from the earth: the sea water attracted by the magnetic force of the moon can pile up ten meters high (making the earth reach the tidal level). The electromagnetic attraction of the sun is 300000 times as much as that of the earth. The performance of the solar magnetism in absorbing energy from the earth and pulling the earth to rotate is the tidal level of the second tide every day and night. When the sun and the moon cooperate to absorb the earth's energy and pull the earth's rotation, the obvious performance is the second big flood on the first and the 15th of each month. When the sun, the moon and various planets gather together to absorb the earth's energy and pull the earth to rotate, it is the second largest flood on August 1 and 15 every year. The earth's obvious magnetic absorption of the sun, the moon, and various planetary energy shows are the second minimum tides on the 8th and 21st of each month. The north pole (which can be confirmed by compass) with the strongest magnetic force of the earth is the aurora borealis, which is the energy performance of the on galaxy and the Milky Way galaxy. Moreover, it is Newton's theory of universal gravitation that the central axis of the earth in the north pole (the coldest point in the world is about - 83 degrees below zero) is always facing the galaxy on and the galaxy below zero. There must be universal thrust and gravitation to make the earth and all kinds of planets rotate regularly
explain the distance between the sun and the earth:
the light, X-rays and radio waves released by the sun radiate electromagnetic radiation to the earth for the use of the earth's energy. The useful biological energy is released through earth transformation, and the surplus is radiated to the sun by dark light, X-ray and radio waves for the use of the sun. The electromagnetic radiation of yin and yang can travel back and forth in space at the speed of light and generate light and heat, and form an electromagnetic pillar of about 15 million kilometers between the sun and the earth. The prescribed distances between the earth and the moon, various planets and other planets, and between the sun and various planets are all realized by the same principle. This theory can be confirmed by two or five magnets
people always think that the earth, the sun and other planets exist alone. Therefore, most of the energy needed for scientific and economic development and improvement of people's life is obtained by using coal, oil and natural gas (fossil fuels). In the process of combustion and explosion of fossil fuels, a large amount of oxygen is consumed and harmful gases (carbon dioxide, etc.) are emitted. In addition, most of the crop straw and waste plastics were burned and cleaned up, and many kinds of fires, especially forest fires, bomb test, bombs, satellites and rockets for war and military exercises were launched. Both consume the necessary oxygen of the sun and emit harmful gases such as carbon dioxide and high radiation energy to the solar body. Moreover, most of the forests that can proce oxygen and water are destroyed by forest fires and deforestation. As a result, the global air oxygen content is less than the normal value of 20.95% (oxygen ion 2100), and the content of carbon dioxide, sulfur monoxide and other greenhouse gases seriously exceeds the normal value (0.03%). It destroys the ecological balance of the solar system. As a result, the number of days decreased in spring and autumn and increased in winter and summer. However, it's cool in autumn today and cold in the future. Make the global winter cold surface expand and extend: make the south rare or no ice, snow area, now common ice, snow. Snow disaster is common in the north where ice and snow are common. The expansion of the global summer hot surface and the extension of time make the areas with rare rainstorms and floods in the north, and the areas with common rainstorms and serious floods, and the areas with common natural disasters in the south, occur frequently. It can be seen that the development of science and economy use energy

6. This problem can be solved by Excel standard function, but it's a little boring
to ask a question, there must be a place in your original form where you can identify the currency, right? And before unifying currencies, you need to decide what your base currency is? RMB or USD or something
the information to be prepared is the exchange rate between each currency and the base currency
suppose you have only two currencies, RMB and USD, the base currency is RMB, and the exchange rate is 1usd = 7RMB
suppose the data table format is as follows
col a amount (numerical type)
col B currency
col C our target fields
column A and B are your original data, as long as you write excel function on column C
function = if (B1 = & quot; USD", A1 * 7, A1)

the sorting is nothing special, just the same as before. Excel sorting is not automatic, it is triggered manually, so if you want to sort, go to data - & gt; sort