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TOP products are produced under strict quality control at five plants in Japan and two overseas plants. Rather than simply turning out large numbers of standardized products, TOP's manufacturing operations have been designed so as to be capable of flexibly adapting to product improvements and changes in specifications. This enables technological advances and the needs of users to be rapidly reflected in the end product.

Moreover, TOP has received IS0 13485 : 2003 (Quality Management Systems) certification, which assures that a company has a quality management system of international caliber.