◆ 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

Laser Diode Company Background & Product Category Situation

1. Basic information and capabilities of the company

QSI is a laser diode/semiconductor laser manufacturer in South Korea. QSI possesses integrated manufacturing capabilities ranging from EPI (epitaxial wafers), Fab (wafer processing), to PKG (packaging). In other words, its manufacturing process covers core aspects from chip design/epitaxial growth to packaging.

2. Product line and technical specifications

QSI's products include red (wavelength 635-680nm), near-infrared/infrared laser diodes (bands such as 780-940nm), and infrared VCSELs. Their applications cover laser scanning, printers, LiDAR, facial recognition, sensors, and more.

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

3. Declared quality/reliability

"From chip design to packaging, we achieve full-process independent production and continuously innovate to meet 100% of our customers' product needs." Such statements are a sign of manufacturers claiming to have high control capabilities and quality control.

The situation of Longxingda Technology as the general agent of QSI in Korea

1. Business and positioning

Shenzhen Longxingda Technology Co., Ltd. is a general supplier specializing in deep ultraviolet (UVC) LEDs and Korean QSI laser diodes. Specifically, in the Chinese market, it introduces QSI products to the country and serves as the general agent.

It primarily deals with QSI laser diodes, UV LEDs, laser modules, epitaxial wafers, etc. It also promotes certain typical models, such as 780nm 30mW for lidar, 830nm for projection, and 650nm for PM2.5 detection.

Quality assessment & pros and cons (based on existing data + industry norms)

Based on the above, my comprehensive evaluation is:

Advantages:

Comprehensive manufacturing capabilities: QSI's full-process manufacturing capabilities (epitaxy + packaging + finished products) mean a strong grasp of quality control. For devices such as laser diodes, which are sensitive to reliability, wavelength stability, temperature rise, lifespan, etc., having full-process control is a plus.

Wide product range: Diverse wavelengths and a wide span of power levels allow for flexible selection.

The product has a solid foundation in market validation: the manufacturer claims it has been "validated in the global market" and provides export and application cases (such as sensors, printers, LiDAR, etc.). The agent has also applied it in multiple scenarios. Such background indicates that the product is at least accepted in certain applications.

The agent is present and provides detailed promotion: As the general agent, Longxingda has a clear product line, along with project areas and application descriptions, and can offer advantages such as domestic support, after-sales service, and inventory preparation.

Overall, based on public information, QSI's laser diodes are quality and competitive products. As the general agent, Longxingda has certain strength and channels in the Chinese market. If your application has high requirements for stability, lifespan, temperature drift, and wavelength accuracy, QSI is a brand to consider;