COVASTONE is the artificial marble product that is made of the base material of unsaturated polyester resin with a low shrinking agent, augmentation, and mixture of additives. Korvan does the production process with these materials using the high-temperature pressed mold method. COVASTONE has good durability and size stability because it is a thermoset material.

By using the hydraulic press machine to press and mold with an SMC sheet (the mixture of unsaturated polyester resin and glass fiber), Korvan produces panels. The tank composition is panels (bottom, wall, roof - the main body), internal and external accessories, and sealant. By using bolt fasteners, we assemble the tank. It is excellent durable, watertight, and hygiene.

Eco-design fence is designed with the dynamic concept of tree branches and wave flow. Our fence has formativeness than normal steel and plastic fences.

A low-voltage joint box is manufactured with a press machine designed accurately and in high-temperature conditions above 150 ℃ by SMC (Sheet Molding Compound) material. Moreover, it is corrosion resistance, weatherproof, and impact-resistant because the molding process is done by above 1,500-ton hydraulic press machine.