The company's polyvinyl chloride (PVC) valves and phenolic resin gained recognition in the midst of rapid economic growth. Unlike valves made from metal, polyvinyl chloride (PVC) valves have built-in corrosion resistance, while phenolic resin is the optimum material for industrial molds such as thermosetting resins. We expanded our investment in facilities and entered new fields in response to market needs. In 1961, the company's shares were listed in the Second Section of the Tokyo Stock Exchange.
Factories were built in Shimonoseki in 1963, and in Tone and Tokiwa in 1964. Also in 1963, we started manufacturing resin-coated-sand (RCS). The demand for resin materials increased with the advent of an automotive society, leading to the construction of an Aichi factory in 1967. Our aim was to improve delivery speeds and reduce costs by building a plant close to the biggest automobile manufacturing region.

Expansion from a Local Business into a National Corporation

In line with the nationwide factory rollout, we established a network of sales representatives together with 45 business centers across the country, thus creating a nationwide sales framework. In 1973, we began manufacturing polyvinyl chloride (PVC) pipes. As a result of this business strategy, we succeeded in growing from a local business into a national corporation.
In 1974, the company's shares were listed in the First Section of the Tokyo Stock Exchange, and a special sales contract was signed with Asahi/America, Inc. in 1978. In 1985, amidst signs of economic recovery in Japan, we achieved record sales of 40 billion yen. As a result of continuously undertaking challenges in new fields, we have carved out our position as the top manufacturer of polyvinyl chloride products and phenol resins.