◆ Architectural decoration instrument market 1. Line-throwing instrument manufacturers 2. Leveling instrument manufacturers ◆ Measuring instrument market 1. Manufacturers of laser range finders, total station instruments, etc. ◆ Toy and stage lighting market 1. Laser pointers, finger Pen marker manufacturers 2. Stage, karaoke booth and other equipment manufacturers ◆ Barcode scanner market ◆ Other markets 1. Gun sight manufacturers 2. Laser therapy instrument manufacturers 3. Sensors, laser headlights, etc

Background and Category of Laser Diode Company

1. Basic information and capabilities of the company

QSI is a laser diode/semiconductor laser manufacturer in Korea. QSI has integrated manufacturing capabilities from EPI (epitaxial wafer), Fab (wafer processing) and PKG (packaging). In other words, the manufacturing process covers the core links from chip design/epitaxial growth to packaging.

2. Product line and technical specifications

QSI's products include Red light (wavelength 635-680nm), near infrared/infrared laser diode (wavelength 780-940nm) and infrared VCSEL. Uses include laser scanning, printers, LiDAR, facial recognition, sensors and so on.

In terms of power and wavelength, there are short-wavelength and low-power types (such as 5-100mW, etc.) and medium-power models. For example, the model of 808nm/200-500mW is mentioned in the product line.

3. claimed quality/reliability

"From chip design to packaging, realize independent production in the whole process, and continue to innovate to meet the 100% demand of customer products." This kind of expression is a sign that the manufacturer claims that it has high control ability and quality control.

Longxingda Technology as the General Agent of QSI in Korea

1. Business and positioning

Shenzhen Longxingda Technology Co., Ltd. is the general supplier of "focusing on deep ultraviolet UVC LED and Korean QSI laser diode". That is, in the China market, it introduced QSI products into China and acted as the general agent.

It mainly deals with QSI laser diodes, UV LEDs, laser modules and epitaxial wafers. Some typical models, such as 780nm30mW for lidar, 830nm for projection and 650nm for PM2.5 detection, are also publicized.

Quality Evaluation & Advantages and Disadvantages (Based on Existing Data+Industry Norms)

Based on the above, my comprehensive assessment is:

Advantages:

Comprehensive manufacturing capacity: QSI's full-process manufacturing capacity (extension+packaging+finished products) means that it has a strong grasp of quality control links. For laser diode, which is sensitive to reliability, wavelength stability, temperature rise and life, the whole process control is a plus item.

Wide range of products: various wavelengths, large span of power ladder, and flexible selection.

Market verification has a certain foundation: the manufacturer claims to be "verified by the global market", and there are export and application cases (such as sensors, printers, LiDAR, etc.). Agents are also used in many occasions. This background indicates that the product is acceptable in at least some applications.

The agent exists and the publicity is meticulous: Longxingda, as the general agent, has a clear product line, a description of the project field and application, and can provide advantages such as domestic support/after-sales/stocking.

On the whole, QSI's laser diode is a good quality and competitive product from the public information. Longxingda, as the general agent, has certain strength and channels in China market. If your application has high requirements on stability, lifetime, temperature drift and wavelength accuracy, QSI is a brand that can be considered;