“We don’t have enough workers.”
“Inspection quality is not consistent.”
“The burden of re-inspection never decreases.”

For Japanese manufacturing companies operating in Thailand, these challenges in the inspection process are becoming more serious each year. This is particularly evident in the inspection of small metal components such as bolts and nuts, as well as in re-sorting processes for imported parts, where handling 50,000 to 100,000 pieces per day is not unusual. Manual inspection inevitably reaches the limits of human concentration, and prolonged full inspection often leads to missed defects and inconsistent judgments.

To address these challenges on the production floor, Nano Seimitsu offers a step-by-step automation solution that combines AI-powered sorting machines with contract sorting services.

Labor Savings and Consistent Quality through 100% Automated Inspection

A sorting machine is a device that performs high-speed, 100% automated inspection of the dimensions, shape, and appearance of mass-produced components. With a processing capacity of 200–300 pieces per minute, it enables both stable quality control and labor savings. In Thailand, approximately 70 units have been installed, mainly by bolt and nut manufacturers.

As a general guideline, production lines that require inspection of 50,000 pieces or more per day tend to achieve clear cost benefits from automation. For example, with a processing speed of 120 pieces per minute, it becomes possible to inspect around 100,000 pieces per day, making automation a practical solution for reducing dependence on manual inspection.

【Examples of Worksites Where Sorting Machines Are Recommended】
✅Manufacturers of small metal components such as bolts and nuts
✅Production lines requiring inspection of 50,000–100,000 pieces or more per day
✅Companies experiencing missed defects or inconsistent inspection results due to manual inspection
✅Worksites aiming to reduce inspection costs and labor dependency
✅Situations requiring incoming re-inspection (re-sorting) of imported or outsourced parts

【Main Manufacturers Handled by Nano Seimitsu】
Nano Seimitsu primarily works with Taiwanese and Chinese manufacturers, selecting the most suitable models based on the target products and inspection requirements. We also support semi-custom specifications and adjustments tailored to each customer’s needs. ■ CCM (Taiwan & China)
■ VIZION (Taiwan)
■ CCT (Taiwan)
■ UAZNC (China)
■ DECSYS (Japan & Thailand)

AI Reduces Over-Detection in Conventional Sorting Machines

Conventional camera inspection systems are strong in dimensional measurement, but they tend to generate over-detection when evaluating surface conditions such as fine scratches, dents, rust, and surface marks. Because the system may pick up excessive noise, even good products can be judged as defective, increasing the burden of re-inspection. AI-powered sorting machines address this issue by learning from NG images, enabling them to cancel out noise and suppress over-detection. The key point is not only to detect defects that were previously difficult to identify, but also to reduce unnecessary NG judgments.

AI is not a universal solution. When it comes purely to inspection accuracy, the flexible judgment of experienced inspectors can sometimes outperform automated systems. However, in environments involving mass production or prolonged inspection work, human concentration inevitably reaches its limits. AI is designed to complement those limitations, enabling consistent and stable inspection results over long periods of operation.

AI implementation also requires careful preparation. Defining inspection criteria and developing appropriate learning models are essential to achieving reliable results. Nano Seimitsu supports this process by setting inspection standards tailored to each production site and proposing optimal operating conditions, ensuring that the machine’s performance is utilized to its fullest potential.

▲ AI functionality added to an image sorting machine manufactured by CCM (Taiwan)

▲ AI-based visual inspection

Try Before You Invest: Contract Sorting Services

One of Nano Seimitsu’s key strengths is that it operates sorting machines permanently installed in Thailand, providing contract sorting services capable of processing more than 10 million pieces per month.

Companies that focus solely on equipment sales often provide limited opportunities to verify performance before purchase. In contrast, Nano Seimitsu offers a try-before-you-invest approach, allowing customers to first confirm inspection accuracy and processing capacity through contract sorting before proceeding with equipment installation.

This approach provides greater flexibility: as inspection volumes grow, customers can transition to installing their own equipment, while smaller production lots can continue to be handled through contract sorting. As a result, companies can pursue automation investments while minimizing the risk of buying first and regretting later.

▲ Automated sorting of special clips

▲ Image inspection of resin products and plastic parts

Strategic Capital Investment Utilizing BOI Incentives

In Thailand, automation investments may qualify for incentive programs offered by the Thailand Board of Investment (BOI). These programs can provide benefits such as corporate income tax exemptions and other privileges, which in some cases can significantly reduce the effective cost of capital investment.

Nano Seimitsu is a member of the Thai Automation and Robotics Association (TARA) and provides customers with information and support for utilizing these incentive programs. One of the company’s key strengths is its ability to propose equipment implementation alongside guidance on how to effectively leverage applicable government incentives.

A Practical Step-by-Step Approach: Start with Standard Machines, Then Introduce AI

Although AI is an attractive concept, it is often more practical to first establish an automation foundation using a standard sorting machine rather than aiming for a highly advanced solution from the outset. Once the automated inspection process is in place, AI capabilities can be introduced at a later stage. Nano Seimitsu supports both standard sorting machines and AI-equipped models. The company proposes optimal implementation plans tailored to each customer’s inspection volume, accuracy requirements, and investment strategy.

If you are considering introducing sorting machines in Thailand, or looking to reduce labor requirements in inspection processes while advancing smart factory and paperless initiatives, please feel free to contact us. From pre-installation verification through contract sorting to equipment implementation and support in utilizing BOI incentives, we provide comprehensive support for strategic automation investments.