The trap of solar street light market

9月 4, 2023
  1. Reduce the allocation of virtual bids
    False labeling by reducing products refers to the dishonest behavior of privately reducing product specifications for merchants, but falsely marking product parameters according to the specifications agreed with customers in order to obtain the price difference. This is a typical trap in the solar street light market.
    The components with reduced configuration and virtual standards are generally components whose specific parameters are difficult to identify at the customer site, such as solar panels and batteries. The actual parameters of these two components need to be tested with instruments to know. Many customers have this experience. If they ask different merchants for the same parameters, the prices they get may vary widely. Generally speaking, the cost of raw materials for the same product is similar. Even if there are some price differences between regions, labor costs are different, and the process equipment is different, a 0.5% price difference is normal. But if it is too much lower than the market price, it is very likely that you will get goods with a reduced allocation and a false bid. For example, if you ask for a 100W solar panel, the merchant will only price it based on 80W. In fact, it will only give you 70W of power, so that he can earn a 10W price difference. The unit price of batteries is higher, and the return rate of false bids is higher, making them the hardest hit area for false bids.
    There are also customers who bought the same 6-meter 30W solar street light, but the effect is completely different. The merchant tells you that it is a 30W light, and the number of lamp beads is more than 30W. But what is the actual lighting power? I don’t know, I can only see that no one else’s 30W light is on, and the working hours and rainy days also behave differently.
    Now even LED lights are falsely marked by many dishonest merchants, using lamp beads with a small rated power as high-power lamp beads. The power is falsely marked. Customers only know the number of lamp beads, but do not know the rated power of each lamp bead. How many. For example, the very popular small golden beans or floodlights in Guangdong that often cost dozens or hundreds of watts are actually made of 2835 or 5730 lamp beads with a rated power of only 0.1-0.5 W/piece. Even if they are 100W, the actual rated power is only 10W.
  2. Swapping concepts
    The most typical concept of secret replacement is the battery. In fact, when we buy a battery, we ultimately want to get the electrical energy that the battery can store, in watt-hours (WH), that is, how many hours (H) can the battery be discharged by using a lamp of a certain power (W). . However, customers often focus on the battery capacity (Ah), and even many dishonest merchants guide customers to only focus on AH without mentioning the battery voltage. Let’s first look at the following set of relations.
    ∵ Power (W) = Voltage (V) * Current (A)
    Bringing it into the electric quantity (WH), we get:
    Electricity (WH) = Voltage (V) * Current (A) * Time (H)
    ∴ Electricity (WH) = Voltage (V) * Capacity (AH)
    When using gel batteries, this is not a problem, because the rated voltage of gel batteries is 12V, and everyone only needs to pay attention to the capacity. But after the lithium battery came out, the voltage of the battery became complicated. The batteries supporting the system voltage of 12V include 11.1V ternary lithium battery and 12.8V lithium iron phosphate battery; there are low-voltage systems, 3.2V iron lithium and 3.7V ternary; there are even 9.6V systems made by individual manufacturers. When the voltage changes, the capacity changes. If you only focus on the AH number, you will suffer a loss.
    Now take the most common 11.1V 30AH ternary lithium battery and 3.2V 80AH low-voltage iron lithium battery as examples. Many customers just look at the AH number and think that 80AH must be more than twice as much as 30AH, so it must be a good deal. How should the comparison actually be made? At this time, our power WH comes in handy. Let’s do a simple calculation:
    11.1V * 30AH = 333WH
    3.2V * 80AH = 256WH
    It is not difficult to see that the 11.1V 20AH actually has a larger capacity. Therefore, the way to compare battery capacity is to multiply the capacity and voltage and convert it into power (WH) and then compare.
  3. Cut corners
    If the concept of substituting products is still in the gray area of the law, playing the wrong side, reducing allocations to false standards and cutting corners has undoubtedly touched the red line of laws and regulations. Such businesses are not just dishonest, they have actually committed a crime. Of course, people won’t steal nakedly. They will definitely use some cover-up to make it less easy for you to detect. Below I list some common corners-cutting phenomena on each component:
    Solar panels: It is common to use low-efficiency cells to make them large enough, but the power cannot be achieved and the service life will be affected. What’s more, ineffective battery cells are used, and in some places, printed paper sheets are used to encapsulate the components in sufficient size. So estimating power for these solar panel sizes is invalid.
    LED street lights: use low-power lamp beads to pretend to be high-power lamp beads, such as the common 2835 or 5730 lamp beads on the market, each 0.1-0.5W lamp bead, pretending to be 1W/pc high-power lamp beads; use low brightness and low price Domestic chip LEDs are pretending to be imported big brand LEDs; lamps made of light materials and thin walls are directly blown off in windy areas.
    Batteries: When gel batteries were used in the past, experienced customers would weigh them. However, it has been revealed that illegal manufacturers added sand, broken glass, etc. to the battery electrolyte to increase the weight. Nowadays, some manufacturers of lithium batteries also enlarge the casing to pretend to be large-capacity batteries.
    Street light poles: the promised wall thickness, caliber, flange thickness, etc. are not up to standard; a batch of goods is mixed with light poles that do not meet the standard parameters; inferior forged steel plates are used to make light poles; galvanized sheets and galvanized pipes are used The light pole pretends to be a whole hot-dip galvanized light pole…