Based on our accumulated technology and affluent experience, Daeyoun have been supplying the best & stable products with our quality service. Also we have been contributing to the gas and water pipeline industry with supplying stable & good products through continual technology development and quality control.

As starting electric fusion products made by polyethylene, Daeyoun extended the production area to PE ball valve with obtaining proper certificates such as CE, KS, JIS and acquired ISO 9001:2000 quality system certification as a fruit of the improvement for quality & quality assurance of Daeyoun's products.

Since 1984, we have been exporting our products to above 30 countries all over the world and continuously developing them to sustain high quality and meet customer's demand liable to change as time goes by.
Deayoun will grow to be a global company, sustainably growing in harmony with society and the environment.