Umesato Electronics

Takanashi, Umesato Electronics | Semi Conductor Review | Top Silicon Wafer Manufacturers in ApacTakanashi, Chief Production Officer (CPO)
At our factory, we pride ourselves on three key strengths: high-quality products, a wide range of processing capabilities, and efficient production management. In this article, we will focus on two of these strengths—our high-quality standards and our broad processing capabilities. These are the core reasons we are able to deliver the best products to our customers.

We have established a flexible production system capable of handling both mass production and small-lot, multi-product manufacturing. This flexibility enables us to meet a wide variety of customer demands while ensuring top-notch quality across all processes. Our advanced equipment and skilled workforce allow us to deliver everything from customized products to large-scale production runs, making us a reliable partner for a broad spectrum of industries.

One of the key strengths of our production process is its adaptability. In the slicing process, we utilize both diamond wire saws and ID saws, allowing us to quickly respond to high-volume production requirements while also catering to small-lot, multi-product orders. Our ID saws, in particular, excel at handling smaller batches with precision, ensuring that each customer’s specific needs are met with accuracy and care.

Following the slicing process, our edge grinding process showcases our versatility. We are equipped with a wide variety of chamfering wheels, enabling us to accommodate a diverse range of edge shapes based on the unique specifications of each customer. This flexibility allows us to offer finely tailored edge grinding solutions, ensuring that every product meets the exacting standards of our clients.

In the lapping process, we specialize in handling ultra-thin wafers that are difficult for other factories to manage. This capability allows us to meet the growing demand for high-precision, thin products, ensuring both quality and reliability. By utilizing advanced lapping techniques, we are able to provide wafers that meet the most stringent requirements in terms of thickness and uniformity.

Our etching process is supported by both small-scale and large-scale equipment, enabling us to accommodate orders of any size. This versatility allows us to deliver high-quality etching services, regardless of the volume of production. Whether the order is large or small, our team is dedicated to ensuring that each product undergoes a thorough and precise etching process, leaving no room for compromise in quality.

In the polishing process, we combine the craftsmanship of skilled workers using small polishers with the efficiency of large-scale automated polishing machines. This dual approach allows us to maintain high precision in our products while also meeting the demands of mass production. We can accommodate a wide range of products, from double-sided polishing of ultra-thin wafers as thin as 100μm to processing wafers as thick as 3000μm. Our commitment to high precision and efficient production makes us a leader in the field.

  • At our factory, we pride ourselves on maintaining high-quality standards and offering a broad range of processing capabilities. These strengths enable us to meet diverse customer demands with precision and efficiency, ensuring that each product exceeds expectations. From mass production to custom orders, our integrated manufacturing process ensures consistent quality throughout.


In our inspection process, we use advanced measurement equipment to ensure that every product meets the highest quality standards. We have extensive experience measuring the flatness of wafers as thin as 250μm, and our comprehensive inspection system is capable of handling a diverse range of product types. This ensures that all products undergo rigorous quality control, giving our customers confidence in the reliability of every wafer we produce.

One of the greatest advantages of our factory is our ability to offer a fully integrated manufacturing process from slicing to polishing. This allows us to streamline production, reduce lead times, and maintain consistent quality throughout the entire manufacturing process. By handling everything in-house, we can ensure that our customers receive products that meet their exact specifications, delivered on time and at the highest level of quality.

At our factory, we are always striving to adopt the latest technologies and techniques to meet the evolving needs of our customers. Our commitment to flexibility, quality, and precision ensures that we can deliver products that exceed our clients' expectations. Whether it's mass production or highly customized orders, we pride ourselves on our ability to meet even the most complex challenges with tailored solutions that deliver outstanding results.

From the precision of our slicing process to the careful craftsmanship of our polishing and inspection stages, every step in our manufacturing process is designed to provide the highest levels of quality and customer satisfaction. We believe that attention to detail is the key to success, and our goal is to continue offering products that meet the highest standards in the industry.