Why can't some customs data be searched?

Recently, I have seen many automotive parts customers engaged in foreign trade at exhibitions and some offline salon events. Many companies have revealed that some of their traded goods cannot be found on all customs data search platforms. What is the situation?
Through our careful communication, we found that everyone's demands have three characteristics.
The first issue is that small countries have incomplete trade records and inadequate information system construction, resulting in the inability to retrieve trade records. Common examples include Egypt and other countries.
The second issue is that some countries do not provide feedback on data such as bills of lading and customs clearance to the trading producing countries, resulting in the inability to close the data loop. Taking the UK as an example, the queried data can only query its import data, and these do not correspond to third-party export data. So, from the perspective of China, only export data can be queried. From the perspective of the UK, only its imported data can be queried.
Thirdly, countries like Russia and Iran are unable to access their trade data due to sanctions, and therefore major customs data platforms are unable to retrieve their trade records.
If you encounter this situation, don't panic, it's just a normal phenomenon.
Finally, let me share some facts or good news with everyone. The customs data provided by the auto parts fast lane is not updated every six months, but every week. However, our default query period is from six months ago to the current time.
The reason why the default query time range is six months is because the data from the past six months has more reference value, and mining such data has greater value and higher cost-effectiveness.
At the same time, our customs data trade record list displays data in reverse order, adopting the design feature of "liking new and hating old". Strong timeliness, helping enterprises capture procurement dynamics in advance. Accurately screen high-value and high intention customers through customs codes and other information. Positive integration of enterprise profiles (such as contact information, trade reports), allowing buyers with recent frequent procurement records or who have just changed suppliers to be prioritized for display, as the probability of transactions for such customers is usually higher.
Above, welcome everyone to join our platform. If you have any questions about our platform, please feel free to contact our customer service representatives as soon as possible, and we will be dedicated to serving you!