While there are many parts manufacturers that only handle processing, or processing and assembly, it is rare to find a "one-stop manufacturer" like Taiyo Parts that handles everything from product development to parts manufacturing and assembly. Furthermore, it is noteworthy that they have approximately 300 processing manufacturers as subcontractors, giving them a "trading company function" that can meet all kinds of customer needs, from metal to rubber and plastic processing.
The company's greatest strength is its "development capabilities." Both of its two main pillars, the "Housing and Construction Division" and the "Parts Division," have impressive development track records.
The Housing and Construction Division developed the "Lifting Wall," a movable shelf that dramatically improves the usability of kitchen storage shelves by using a patented "hydraulic damper." Now adopted by major kitchen manufacturers, it holds a 70% market share for manual lifting walls. This hit product was developed independently by the company, based on its experience manufacturing parts as a subcontractor for kitchen manufacturers.
Meanwhile, the parts division has developed a manufacturing method called the "die-cast cassette system" (patented), which cuts mold costs in half. This groundbreaking molding system divides the mold into a base (standardized) part and a cavity (newly manufactured) part, and by changing only the cavity part, it significantly reduces mold manufacturing costs. As a result, the company continues to thrive as a parts manufacturer that sets itself apart from other companies.

Taiyo Parts originally started as a parts sales company. However, as the business grew, they keenly felt the need for a "manufacturing function" to produce parts themselves, and transformed into a trading company and then a parts manufacturer. Furthermore, in order to differentiate themselves from other companies, they established a development department 10 years ago and set up an "in-house development system" that handles everything from product planning and design.
President Yoji Shirooka explains: "It's a long-held dream for any parts manufacturer to break away from being merely a subcontractor. That's why we started developing our own products, but if we were to cut off our subcontracting business just because we've succeeded with that, our business foundation would be shaken. The secret to our stability is to maintain a good balance between our own products and subcontracting."

Another aspect that underpins the company's development spirit is its talent development system: the "Biggest Failure Award." This unusual award recognizes an employee who has made a major mistake each year. "When people fail, they become discouraged and stop trying new things. We came up with this award to prevent that. We want to encourage them to try again, even if they stumble." In 2002, the company established a new factory in China to improve its price competitiveness. The person who played a key role in setting up this factory was an employee who had received the Biggest Failure Award a few years earlier.
This company possesses the three key functions of a trading company, a manufacturer, and a development company. It plans to expand its business into the Chinese market in the future.

Processing of metal, rubber, and plastic parts; design and manufacturing of residential equipment, etc.