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Currently, most air conditioning and exhaust ducts in Japan use highly efficient spiral ducts in their flow paths, useful for streamlining during duct construction.

KURIMOTO LTD. introduced the equipment and technology for these spiral ducts in 1958, becoming the first company in Japan to produce and sell such ducts.

Over the following years technical documentation was developed and clarified, manufacturing methods were revised and the distribution network was organized. Today the company continues to deliver high-quality products at an economical price.