STI-IR Co,.Ltd.

STI-IR Co., Ltd., with its Japanese name 株式会社STI-IR, commonly read as "STIAR", is a Japanese manufacturing company headquartered in Higashiosaka City, Osaka Prefecture. The company operates in two main areas: mechanical processing, automated machine manufacturing, and the research, development, and production of oral care products.

STI-IR's operations are organized through its Machinery Division and Commodity Division. The Machinery Division is responsible for precision component machining, jig manufacturing, assembly units, automated machines, and labor-saving equipment. The Commodity Division focuses on developing 360-degree bristle toothbrushes for adults, children, dental professionals, the elderly, and assisted care.

The company has its roots in the mechanical engineering industry in Higashiosaka since the 1950s. Following a period of development and the integration of mechanical manufacturing with 360-degree toothbrush technology, the company officially changed its name to STI-IR Co., Ltd. in 2021, aiming to expand into Japanese and international markets.

STI-IR's unique selling point is its ability to design and manufacture its own toothbrush head production machines. This enables the company to maintain integrated control from product development, bristle arrangement, component machining, equipment manufacturing, and assembly to inspection and packaging.

In the mechanical engineering sector, STI-IR offers services such as turning, milling, grinding, wire cutting, electrical discharge machining (EDM), welding, assembly, and custom fabrication based on drawings. The company can undertake projects involving machine parts, shafts, bushings, jigs, mechanical assemblies, specialized machines, and automation systems.

In the oral care sector, STI-IR develops product lines such as 360do BRUSH, POPOTAN, Dental, and 360doBRUSH φ. The catalog includes toothbrushes for adults, young children, dental professionals, the elderly, individuals requiring assisted brushing, and denture wearers.

The products feature a cylindrical brush head with thousands of ultra-fine bristles arranged 360 degrees, increasing contact area and reducing the need to rotate the brush head during use. Some lines boast over 15,000 or 25,000 bristles, rounded bristle tips, a metal-free structure, and heat resistance according to manufacturer guidelines.

STI-IR also offers electric toothbrushes, replacement heads, and has experience in OEM partnerships, private branding, and developing colors, packaging, and product configurations according to requirements.

With its combination of mechanical engineering expertise and oral care technology, STI-IR is an ideal partner for businesses requiring custom machining, equipment manufacturing, or seeking Japanese oral care products with distinctive designs and OEM development capabilities.