Look at the supplier first: if the goods are fake, it is very unlikely, but sometimes people will pretend to be agents. It's best to go to the original website or telephone to confirm whether you really have the agency qualification. If you are still worried, you can ask the agent for the original invoice, which generally has no price; If you are a trader, you should make a reverse investigation first. If the office space is relatively simple, you should be vigilant. The office space is inconsistent with the actual registered address, so be vigilant; There are few people in the office, so be vigilant; The registration time is less than 1 year, so be vigilant; Be wary of the small registered capital; There are few office phones, and some don't even have faxes, so be alert; There is no special website and corporate email, so be vigilant; Then ask a positive question: does the other party know about the product itself? For example, brand, packaging, grade, type, characteristics, etc ..., can I issue a VAT invoice? Is the VAT a regular 17 sub-ticket issued by the affiliated company, a 4-point or 6-point ticket issued by the national tax agent, or is the company unable to issue a ticket at all ...? If you are still worried, let the supplier fill in the credit investigation report. Can you provide a list of 2-3 customers for the third party to investigate? According to these understandings, there should be a preliminary judgment, whether it is Li Kui jy or Gui Li, but this is still the first step.
Second, look at the model. In fact, there are only the following kinds of fakes now, but the technology and means are "changing with each passing day": the first kind, refurbished after dismantling-chemical cleaning, if you are lucky, you may still be able to use some, which belongs to fake and shoddy products; Second, polishing after disassembly-chemical cleaning+physical polishing+laser engraving+mimeograph+silk screen printing, some of which are polished according to the original model, which is not bad and belongs to fake and shoddy products. There are also some changes from commercial grade to industrial grade, from industrial grade to military grade, from military grade to 883 grade, from low speed to high speed, from low frequency to high frequency and so on. . . The purpose of the change is self-evident, what's more, it is strange to buy a simple "stealing the day"; Third, the transformation of domestic brands-laser engraving+collusion between manufacturers. At present, many domestic products are similar to foreign products, but some performance indicators may not be reached. These are mainly discrete devices, passive devices, connectors and connectors. For example, the pipes and amplifier connectors of FSC are made in China. False, false, false. Hehe, maybe you have bought it, but you just don't know it. Just like people all over the street are wearing' famous brands', such as Nike, Adidas, CK, LV, LEE, etc. This has become a chronic disease in China's economy and a malignant tumor in China's market, NND…… ... Let's talk about components. Fourth, copy the board to make a brand-I don't know how to say this. Whether it is the so-called "stepping on the red line" or crooked ways, it belongs to a dangerous industry anyway. This product is really difficult to distinguish, only to integrate many aspects. Fifth, the original wafer is self-packaged, which should be a "masterpiece", but not all wafers are available, and not all packaging can be done in China, so I won't comment. Alas ... our country does not lose talents, and the world has undergone vicissitudes. I hope these "cottage kings" can become "regular troops" as soon as possible.
Third, look at the brand. What brand is not fake? I said no, some brands, like Nike and Adidas, must go to stores (agents) to buy them. Roadside stalls are unreliable, unless you think it doesn't matter, they will be eye-catching. There are also some brands like Lee and LV. For example, analog devices should be familiar with devices. American ADI is good at analog electronic circuits such as analog-to-digital conversion and amplifiers, and its main competitors are Ti and NSC. All you have to do is pick an ADI model on the IC trading network and input it, ranging from a few pages to dozens of pages. Who is responsible for this prosperity? Is Artie fake? Of course, there are also a few polished and refurbished ones, which are easier to distinguish. But some of them may be difficult for you to tell because they are "at the top", hehe. Attention should be paid to brands such as TI (BB), Maxim (Dallas), Avago (Agilent), SIPEX (Zarlink) and MOT (Feescale, on). In fact, it can only be used as a reference to distinguish between true and false from brand.
Fourth, look at the price. Electronic components actually have a price scale, which is the original website price or book price. It can't be said that this price is the market price, but at least it is a sharp weapon to measure the market price of products. In addition, there are the prices of some large foreign agency websites, such as AVNET, Arrow, Future, Digitkey, Newark and so on. Only Shiping and Procter & Gamble; S a few catalogues have online prices, which can be used as price reference. Generally, the price of the original website is lower than that of the agent website. If there are a lot of goods in the market, whether they are agents or trade, the actual selling price is generally lower than the online price of the original agent 15%-40%. If it exceeds 50%, I rarely see this situation. One possibility is that the market supply is quite abundant, and it is possible to reduce trade by 50% in order to clean up the inventory. If the market supply is small, the actual quotation of the agent will not fluctuate too much, which is close to the original website and book price, but there is usually a delivery date. The common delivery date is 6 2 weeks, and a few are 10 2 weeks, which is related to the factory schedule.
Fifth, look at the packaging: different packaging, the possibility of counterfeit goods is not the same, after all, these counterfeiters also have technical bottlenecks, but there is a principle, as long as the packaging process requirements are not high, China already has such packaging capabilities, especially products packaged with ordinary materials. At this time, we should consider the possibility of counterfeit goods. On the other hand-exclusion method, electronic components are nothing more than resistors, capacitors, transistors, thyristors, buzzers, inductors, bridge stacks, crystal oscillators, relays and integrated blocks. The package of resistor includes carbon film, metal film, winding and thermistor, and there are many fakes. Because of the small size and many types of resistors, there is a great possibility of confusion, but there are not many transformations, because the cost itself is not high and the transformation is of little significance. Capacitor packaging materials are aluminum, porcelain, tantalum, etc., because the material requirements are general and there are many imitations. Transistor packaging materials are plastic, ceramic and gold. Civil transistors are more likely to be fake and imitation, while military transistors are more likely to be polished, disassembled and refurbished. Silicon controlled rectifier, bridge stack, crystal oscillator, and some transistors are all packaged in similar forms, and all the possibilities of counterfeiting and renovation are similar. The packaging material of buzzer and relay is similar, so it is easy to counterfeit. There are many kinds of integrated circuits, so there are many natural packages, including plastic packages, ceramic packages, iron packages and gold packages. From the packaging point of view, plastic packaging is the easiest to forge, ceramic packaging and iron packaging are easy to renovate, and gold packaging is difficult to forge and renovate. Many times it is based on the specific packaging form.
Sixth, look at the batch number: the products of the general agent or the original factory are generally in the past two years, but the products of traders are not necessarily good. Manufacturers mark the batch number differently, most of them are expressed by year and week, but some manufacturers use letters and some use numbers. Generally, there are certain rules, which can be found in the product data sheet and official website. If what you buy is different from the above, put a question mark. If the supplier tells you that the batch number is 0754, it must be false. Another situation is to stop production equipment. The supplier told you that the original batch number of things stopped in 2006 was 2007, but there was no silver here. Many times, many people's fraud methods are not clever. As long as we are more calm and think, it can be completely avoided. Applying the lines from Red Cliff, which is being shown, Zhou Yu asked Zhuge Liang, "Why are you fanning in such a cold day?" Zhuge Liang: "I need to keep calm"; Zhou Yu and Zhuge Liang saw Cao Cao crossing the river. Zhou Yu asked Zhuge Liang, "Where is the way to break the enemy?" Zhuge Liang said, "I need to be calm." Zhou Yu said: "I also need to calm down!"
Seventh, look at packaging: there are only two kinds of packaging, bulk packaging and integral packaging. Knowing that bulk packaging is easier to fake than whole packaging, how to identify it? Generally, there are container bags, tube bags, tray bags, roll bags, tube bags and so on. Bagging depends on the material of the bag The original bags are generally made of better materials, like 3M bags, while some new ones are generally transparent. Generally, the original factory pipes will have some original factory logos, such as brand name, origin and so on. Hard material and uniform specifications. There is no trace on the scattered new tube, and the material is transparent and soft. Judging from the color of the plate, the original color is uniform, not white, and the new color is uneven white, and some have impurities. Check whether there is a reel, whether the quality of the reel is good, whether the information on it is complete, and whether the printed model is consistent. The whole package is not original. If the identification is not accurate, the loss will be even greater. Mainly identify the number of packages, packaging materials, label information, and whether it is vacuumized. Label information is particularly important. If it is fake, the font and barcode on the label can't be exactly the same as the real thing, such as the character string represented by the font and barcode.
Eighth delivery date: domestic agent's delivery date: spot, that is, the period of goods in Chinese mainland is 1-2 days, and overseas spot, that is, the delivery date is generally 2-4 weeks. The original factory is in stock, that is, it is being shipped at the factory, and the delivery time is generally 4-6 weeks. Original order, that is, the goods are produced in the original factory, and the delivery time is generally 8-65438+. In fact, if a trader orders the original order, it will generally add 1-2 weeks on this basis. Because the supply of traders is not as fixed as that of agents, the delivery time is still very distinctive. After careful analysis, we can sometimes roughly judge where their goods come from. If the trader's goods are not in stock and cannot be delivered immediately, we will ask for more details. Non-local spot usually takes 1-2 days, Hong Kong spot usually takes 3-5 days to arrive in Shenzhen, and overseas spot usually takes 7- 10 days.
Ninth, look at payment: it is easy to pay money, but it is not easy to come back when something goes wrong. Check carefully before payment. If you pay cash, you'd better give it in person, understand the financial process of their company and stamp the financial seal on the receipt or voucher. Good companies are relatively standardized; If it's cash by wire transfer, ask them to fax the bank information stamped with the financial seal. If the amount is too large, it is best to fax the valid certificate of the other account holder. If you take a company account, it is safer than cash, but there are also preventive measures. First of all, see if their company name and bank account name are consistent. If not, we should be vigilant, ask the other party to provide proof of why it is different, and affix the official seals of two different companies. When writing a check, you must remember to write an avatar and draw two small diagonal lines in the upper left corner of the check, so that the money can only be deposited in the company account and can only be used for transfer. This is very reliable if you accept a draft or open a letter of credit (overseas) at a bank. In short, we adhere to a principle, and make clear what we can think and ask for before paying money, so as to avoid endless future troubles.
Tenth, look at yourself: classify your own suppliers by grades and types, authorized dealers by regional grades, independent spot dealers by regional grades, independent suppliers looking for goods by regional grades, market counter suppliers by regional grades, and temporary suppliers by regional grades. In fact, there are not many suppliers, and they should be detailed. There are always matching suppliers when you need them. When planning to buy in bulk, look for authorized dealers. At this time, there is plenty of time, the delivery time of authorized dealers is generally acceptable, and the quality is relatively guaranteed. If the delivery cycle is too long, it is best to find a response strategy quickly. When purchasing in bulk for temporary production, you can find both authorized dealers and global independent dealers, and you can get the best purchasing plan in the shortest time. Generally speaking, don't put price first in bulk purchase. If the time is up, you can apply for samples from the original factory or authorized dealers, and they will also give you some advice on the second application. If the time is short, you can find an independent distributor, which is their specialty and can test the quality of these suppliers. In addition, the board may not be finalized at the time of research and development. Some good independent distributors can help you solve various problems, such as the substitution of different brands and models of the same brand, and help you confirm the packaging, market analysis and global supply. Finally, talk about the purchase of the problem model. The main problems are: stop production, stop production, lead-free environmental protection, the name change of the manufacturer, and the naming method of the model has also changed. Discontinued equipment generally does not appear in the field of consumer electronics, mainly in the industrial and military fields. Except Rochester, you can only find independent dealers. The discontinued equipment is caused by the original factory itself. The agent may have the goods, but the delivery time is too long and even uncertain. Find an independent dealer. There are lead-free environmental protection products. For the sake of distinction, the two models will be different. For example, add' z' to the suffix of AD,'+'to the suffix of MAXIM, and change the suffix of ATMEL to' u'. There are many changes in Winbond, which are generally explained in the data sheet, so I won't go into details. After confirmation, I will find the corresponding supplier, and the manufacturer will change its name or reorganize, which will also cause changes in the model. Ask an independent dealer to help you. In short, many times we choose suppliers we don't know to purchase, because we have no choice but to make our own preparations before purchasing, so as to avoid rushing to purchase and making large-scale inquiry (which is easy to speculate on high prices). In addition, when purchasing, don't just look at the price. The suppliers with quality first, service first, technology first, formal and orderly, financial stability and reasonable price are your first choice.
Attachment: "Better late than never"
Everyone has seen Zhao Benshan's Kidnapping, and Fan Wei has been fooled again and again. Maybe we should just laugh it off. Who really knows the truth? Losing money is a blessing, but your stomach can't stand eating the same loss often. As the saying goes, you learn from your mistakes. Although you lose money by buying fake goods, if you win the lottery, you should combine both hard and soft skills and start to exercise your language organization and defense ability. (Learn from the Sesame Officer in "Jiupin Sesame Officer" starring Stephen Chow, hehe). First, call the supplier immediately and tell them why the equipment they provide can't be used and what is the failure rate. At the same time, attach the test report provided by technicians (the more detailed the better), tell them the seriousness and consequences of the situation, and put forward the requirements and conditions you prepared in advance. We don't have to speak loudly, but our wording must be civilized, well-founded and spread all over the world. Second, if the supplier does not agree or admit it, it is best to tell them in writing the measures you will take with the official seal. The proper legal means mainly include (civil litigation, industry media exposure, etc. ), supplemented by a roundabout way. As long as the other party still wants to do business, they will reconsider. When dealing with problems with suppliers, we can't completely expect them to give us a good solution. We must find another way to solve the problems caused by this.