Stainless steel and resistant to rust! DK Drain Pipe [Patented]

Impact the tip bit to increase propulsion. A new driven drainage pipe made of stainless steel, resistant to rust [patent obtained].

last updated Mar 17, 2025

Topsoil Erosion Control Method - DK Soil Keeper Method

Lightweight and highly workable surface soil erosion control method.

last updated Aug 28, 2025

High Durability STK Net 【Rockfall Prevention / Landslide Prevention】

Lightweight, rust-resistant, high-durability polyester net.

last updated Nov 21, 2025