In an exclusive interview with SME Times, the President of Star Fill Co., Ltd, Masaaki Shiratori, shares insights on building a specialized manufacturing company driven by precision engineering, product durability, and Japanese craftsmanship. He discusses the company’s journey since its establishment in 1974, its diverse product range including go-kart cars and marine equipment, key markets served globally, and future plans focused on innovation and sustainable growth.

1. Can you tell us about the founding vision of Star Fill Co., Ltd?

Star Fill Co., Ltd was established in 1974 with a simple yet powerful vision: to create reliable and innovative products that bring value to customers across industries. Our founder believed in precision, consistency, and long-term trust rather than short-term gains. Over the years, that vision has remained unchanged, even as we expanded our product line and global reach. From go-kart cars to marine solutions, every product reflects that original philosophy. Today, we continue to build on that foundation, ensuring that each innovation aligns with our commitment to quality and customer satisfaction.

2. What drives your company’s innovation in both land and water products?

At Star Fill, innovation begins with understanding how people interact with our products. Our approach to innovation is deeply rooted in observation and real-world application. Whether it is a go-kart car or a pontoon boat, we focus on enhancing user experience, safety, and durability. Our engineers work closely with production teams to refine designs and improve functionality. We do not chase trends; instead, we aim to create products that remain relevant over time. This balance between creativity and practicality allows us to innovate effectively while maintaining the reliability our customers expect from us.

3. How does a small team of 10 employees manage such diverse production?

Operating with a small team is actually one of our greatest strengths. Each member of our workforce is highly skilled and takes ownership of their responsibilities. This creates a strong sense of accountability and collaboration across all departments. Communication is direct, and decision-making is efficient, which helps us maintain consistency in production. With three engineers guiding technical processes, we ensure that every product meets our standards. Our size allows us to stay agile, adapt quickly, and maintain a personal connection with every aspect of the business.

4. What role do your engineers play in maintaining product quality?

Our engineers are the backbone of Star Fill Co., Ltd. They are involved in every stage of the production process, from conceptual design to final inspection. Their expertise ensures that each product is not only functional but also durable and efficient. They continuously analyze performance data and customer feedback to identify areas for improvement. This hands-on approach allows us to maintain strict quality control while also encouraging innovation. Their dedication is a key reason why our products have earned trust in both domestic and international markets.

5. How has the company evolved since its establishment in 1974?

Over the past five decades, Star Fill Co., Ltd has undergone significant transformation while staying true to its core values. We began with a narrow focus but gradually expanded into a broader range of products, including marine equipment and recreational vehicles. Advances in technology have allowed us to improve production efficiency and product design. At the same time, we have maintained our commitment to craftsmanship and quality. This balance between tradition and progress has enabled us to remain competitive and relevant in a constantly changing industry.

6. What makes your product range unique in the market?

“Our strength lies in combining simplicity with reliability.”

Our products are designed with a clear purpose and built to last. Whether it is a sea barrier or a water boat, we prioritize functionality and durability over unnecessary complexity. This approach ensures that our products perform consistently in real-world conditions. Additionally, our diverse range allows us to cater to different customer needs while maintaining a unified standard of quality. By focusing on what truly matters, we create solutions that are both practical and dependable.

7. How do you ensure sustainability in your manufacturing processes?

Sustainability is an important aspect of our operations. We aim to minimize waste by optimizing our production processes and using materials efficiently. Our products are designed for longevity, which reduces the need for frequent replacements and lowers environmental impact. Being located in Shizuoka, we are constantly reminded of the importance of preserving natural resources. This awareness influences our decisions and encourages us to adopt responsible practices. While we are a small company, we believe that every effort contributes to a more sustainable future.

8. What challenges have you faced as a manufacturer and exporter?

Like any company, we have faced challenges, particularly in adapting to changing market demands and global competition. Exporting products requires meeting diverse standards and expectations, which can be complex. However, these challenges have also pushed us to improve and innovate. By focusing on quality and building strong relationships with our partners, we have been able to overcome these obstacles. Our ability to remain flexible and responsive has been crucial in navigating the evolving business landscape.

9. What is your leadership philosophy as President?

“I believe leadership is about guiding a team to achieve shared goals with clarity and trust.”

As President, I focus on creating an environment where every team member feels valued and motivated. I encourage open communication and collaboration, as these are essential for innovation and efficiency. My role is to provide direction while also supporting my team in their individual responsibilities. By fostering a culture of trust and accountability, we are able to work together effectively and maintain our high standards. Leadership, to me, is about enabling others to succeed.

10. What are your future plans for Star Fill Co., Ltd?

Looking ahead, we aim to expand our product offerings while maintaining the quality that defines our brand. We are exploring new technologies and materials that can enhance performance and sustainability. At the same time, we plan to strengthen our presence in international markets by building long-term partnerships. Growth is important, but it must be balanced with our core values. Our goal is to continue delivering reliable products that meet the evolving needs of our customers while staying true to our identity.