In China, over 95% of the automotive sensor market is dominated by foreign companies. Many vehicle manufacturers and ECU producers are willing to pay millions in R&D fees to giants like Bosch, but they hesitate to use domestic sensors. The industry remains largely dependent on imitation, with small-scale companies struggling to enter the mainstream market.
At various trade shows, such as engine and parts exhibitions, a common sight is the dominance of multinational giants like Bosch in central exhibition areas. Their booths are luxurious, attracting crowds, while smaller, less noticeable booths on the edges often go unnoticed. These small booths may house local sensor companies—hardworking, dedicated, and continuously innovating—but they rarely receive attention from major manufacturers.
The phrase “hollowing out†has become a frequent concern in the Chinese sensor industry. According to Wei Anli, Deputy Secretary-General of the China Internal Combustion Engine Industry Association, sensors are essential for modern vehicles. They act as the "eyes, nose, and ears" of the car, sending signals to the ECU (central processing unit), which then coordinates the car’s functions. In advanced vehicles, especially those with autonomous driving or stricter emissions standards, sensors play an even more critical role.
Currently, an average family car contains about a dozen sensors, while luxury cars can have hundreds. As vehicles become more intelligent and automated, the number of sensors will grow exponentially. Despite this, China’s sensor industry still lacks independence. The domestic market, valued at one trillion yuan annually, sees over 170 billion yuan worth of imports, mostly from companies like Siemens, Bosch, and Honeywell. Domestic firms often only produce low-end sensors, while high-tech ones, such as nitrogen oxide sensors required for emission control, remain entirely imported.
Experts agree that the domestic sensor industry faces challenges: weak industrial foundations, low technology levels, limited product variety, and poor R&D capabilities. “We lack the core chip technology,†said Li Songlin, General Manager of Dewo Si Automotive Electronic Components Co., Ltd. “Even with patents, we struggle due to financial constraints.†Sensor R&D requires significant investment, and many small companies cannot afford it.
Moreover, domestic companies face difficulties in practical application. Sensors must be calibrated with the entire system, but China's testing infrastructure lags behind. This leads to reliability issues and customer distrust. “Vehicle manufacturers don’t want to take risks,†said Song Xibin of Shandong Guogu Functional Materials. “They prefer reliable foreign options.â€
Despite these challenges, some Chinese companies are making progress. Companies like Guo Porcelain, Changzhou Liande, and Dewo Si are developing competitive products. For example, Dewo Si has created high-precision current sensors for electric vehicles, matching international standards. Some companies, like Yonglin Electronics, have introduced fully automated assembly lines, improving product consistency and reliability.
Wei Anli believes that the state must support basic research and help build a strong industrial foundation. “We cannot rely on others for key technologies,†he said. With growing opportunities in autonomous driving and smart vehicles, there is potential for Chinese sensors to regain their place in the market.
China is the world’s largest auto market, and the sensor industry is at a critical stage. While challenges remain, the future holds promise if the right investments and strategies are made.
USB4 Cable
USB4 specifies tunneling of:
USB 3.2 ("Enhanced Superspeed") Tunneling
DisplayPort 1.4a -based Tunneling
PCI Express (PCIe)-based Tunneling
Main Benefits of USB 4
The new USB 4 standard has three main benefits over prior versions of USB.
40 Gbps Maximum Speed: By using two-lane cables, devices are able to operate at up to 40 Gbps, the same speed as Thunderbolt 3. The data is transmitted in two sets of four bidirectional lanes.
DisplayPort Alt Mode 2.0: USB 4 supports DisplayPort 2.0 over its alternative mode. DisplayPort 2.0 can support 8K resolution at 60 Hz with HDR10 color. DisplayPort 2.0 can use up to 80 Gbps, which is double the amount available to USB data, because it sends all the data in one direction (to the monitor) and can thus use all eight data lanes at once.
Compatible with Thunderbolt 3 devices: Some, but not necessarily all USB 4 implementations will also work with Thunderbolt 3 devices.
Better Resource Allocation for Video, PCIe: In lieu of alternative mode where the other interface takes over the connection, USB 4 devices can use a process called "protocol tunneling" that sends DisplayPort, PCIe and USB packets at the same time while allocating bandwidth accordingly.
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