Every mechanical keyboard must go through 26 quality inspection procedures, and no tiny flaw can hardly escape the inspectors' eyes.
In Nanping Science and Technology Industrial Park, Zhuhai, the quality inspection department of Hengcang Electronics Technology Co., Ltd. detected faint rebound noise in a batch of keyboard switches. Through the traceability system, the issue was quickly pinpointed to a raw material batch from a new supplier.
The fully automatic inspection system was immediately activated to isolate the defective products. The quality team conducted an overnight analysis and identified the cause: the coating thickness of the switch springs deviated from the standard by 0.01mm. One week later, new products with improved processes passed rigorous testing.
In the field of mechanical keyboard manufacturing, Hengcang Electronics Technology is becoming a trusted partner of many well-known brands, thanks to its rigorous quality control system.
01 Quality Control System: International Standards and Comprehensive Certifications
As an electronic manufacturing enterprise recognized as a national high-tech enterprise, Hengcang Electronics Technology has established a complete and rigorous quality control system.
The company has not only obtained ISO9001 quality management system certification, but also holds 12 patented technologies and 4 administrative licenses—these qualifications form a solid foundation for its quality management.
At Hengcang Electronics Technology, quality control covers every link from raw material procurement to finished product delivery. They have formulated clear quality control processes and specifications, and conduct regular internal audits to ensure the continuous and effective operation of the quality management system.
Hengcang Technology’s quality management is not limited to production links; it also extends to every part of the supply chain. The company implements a strict audit system for suppliers to ensure that raw materials and components meet quality requirements from the source. Adhering to the "three-no principle"—"not accepting, not manufacturing, and not releasing defective products"—they ensure quality control runs through the entire product lifecycle.
02 Production Process Control: Standardization and Automation
In terms of production process control, Hengcang Electronics Technology implements standard operating procedures (SOPs) to ensure every operator works strictly in accordance with regulations.
From the assembly and welding of electronic components, to the installation of keyboard switches and securing of keycaps, each process has clear operational specifications.
Fully automated inspection systems: Hengcang Electronics Technology has introduced automated inspection systems and online quality monitoring technologies, which can real-time monitor quality status during production, promptly identify and correct potential issues. These systems include advanced methods such as visual inspection technology, machine learning-based inspection technology, and vibration detection technology.
SMT mounting process: In the high-precision SMT mounting stage, the company uses micron-level precision mounting equipment to ensure each electronic component is accurately positioned on the PCB board. During the welding process, temperature and time parameters are strictly monitored to prevent component damage.
Automation and precision assembly: Automatic switch insertion machines ensure consistent installation force for each switch; laser engraving technology achieves clear and attractive characters on keycaps.
03 Quality Inspection Technology: Multi-level Inspection System
Hengcang Electronics Technology has established a multi-level product inspection system, ensuring that each production link is equipped with necessary inspection equipment and methods.
From online testing to offline inspection, and from functional testing to reliability testing, the company employs various advanced technologies to ensure product quality.
Online inspection technology serves as the first line of defense in Hengcang Electronics Technology’s quality inspection. During production, they use visual inspection technology for real-time imaging of electronic components, and detect features such as component size and shape through image processing technology.
For keyboard manufacturing, this technology can identify quality issues such as whether switch positions are accurate and whether solder joints are uniform.
Offline inspection technology provides more detailed quality evaluation. Hengcang Electronics Technology uses coordinate measuring technology for precise measurement of key components to ensure they meet size requirements; meanwhile, it applies X-ray inspection technology for perspective detection of internal structures to identify potential defects.
In the finished product inspection stage, the company conducts comprehensive functional testing on every keyboard, including key actuation testing, anti-ghosting testing, and backlight testing. Sampled products also undergo rigorous reliability tests, such as high-low temperature cycle testing, vibration testing, and durability testing, simulating various scenarios of long-term keyboard use.
04 Employee Training and Quality Awareness: A Quality Culture with Full Participation
Hengcang Electronics Technology recognizes that excellent employees are the core element of quality control. The company regularly provides employees with professional skills training to enhance their operational proficiency and quality awareness.
By organizing internal training sessions and external expert lectures, Hengcang continuously strengthens employees’ understanding of and attention to quality control.
The company develops tailored training programs for different positions, ensuring employees master the necessary operational skills and quality control knowledge. New employees must receive systematic training before taking up their roles, and the target training coverage rate for existing employees is over 80%.
Hengcang has also established an employee skill assessment mechanism to ensure every employee possesses the required professional knowledge and skills prior to taking up their post.
Through a quality reward and punishment system, the company incentivizes employees to focus on product quality and elevate overall quality awareness. The concept of “Quality first, everyone is responsible” has been deeply rooted in its corporate culture.
In Hengcang’s production workshops, employees are encouraged to actively participate in quality management activities and put forward improvement suggestions. By establishing a quality feedback mechanism and setting up quality feedback channels in the production process, the company encourages timely reporting of quality issues, forming effective information communication channels.
05 Continuous Improvement Mechanism: Data-Driven Quality Optimization
Hengcang Electronics Technology regards continuous improvement as the core driving force of quality management. The company continuously optimizes production processes and improves quality management levels through the PDCA cycle method.
Quality data of each production batch is meticulously recorded and analyzed to identify potential issues and formulate targeted improvement measures.
The company has established a sound quality traceability system, ensuring the entire process of each product—from raw material procurement to production, inspection, and sales—can be traced. Through barcode or QR code technology, production information of each product is recorded, enabling rapid tracking of the responsible link in case of quality problems.
The customer feedback mechanism is an important information source for Hengcang’s continuous improvement. The company has improved customer feedback channels to timely collect and analyze customers’ opinions and suggestions on product quality.
Through after-sales service and market research, it gains real feedback from customers on products, and conducts product optimization and improvement accordingly.
Hengcang also regularly statistically analyzes defective product data to identify potential quality issues and take corresponding preventive measures.
Through monthly quality review meetings, the company analyzes quality data and formulates improvement plans, ensuring the quality management system always adapts to production practices.
Under the lights of the quality inspection area, a quality inspector is conducting a final appearance check on a batch of mechanical keyboards ready for shipment. Every keyboard undergoes the touch of her fingertips and her sharp eyes—no tiny scratches or uneven color can escape detection.
A 99.3% product first-pass rate is the best proof of Hengcang Electronics Technology’s quality control effectiveness, far higher than the industry average.
In Hengcang’s quality records, the customer return rate has remained below 0.05% for 18 consecutive months—this is the market’s best recognition of the company’s quality control system.
