Daejin Jeonggwang Co., Ltd. is a hidden champion established in 1993, specializing in non-metallic mineral refining and processing for approximately 30 years, with 8 employees. With a production base in Yeongam-gun, Jeollanam-do, the company transforms natural minerals such as kaolin and clay into high-value-added ceramic raw materials and industrial molding sand. It primarily specializes in refining clay and kaolin for sanitary ware, supplying them to major domestic sanitary ware manufacturers.

"A specialized sanitary ware raw material company that has grown through refining technology and quality reliability. Daejin Jeonggwang Co., Ltd. is a specialized refiner of clay for sanitary ware, stably supplying high-quality raw materials based on the nation's top-tier refining facilities and production capabilities. With over 30 years of accumulated technology and continuous efforts for quality improvement, we have produced various products with advanced characteristics, such as BQ, BQ-1, UR-B clay, and DK-B kaolin. Currently, Daejin is responsible for approximately 50% of the clay and kaolin used by major domestic sanitary ware manufacturers. Recently, the sanitary ware industry has faced new challenges, including premiumization and rising energy costs. In this situation, Daejin's clay will be a practical cost-saving solution that improves production yield and the most economical choice. We value not only product quality but also trust with our customers. We will always listen to our customers' voices and become a reliable partner that enhances their competitiveness."

Business Areas

• Supply of High-Purity Ceramic Raw Materials and Industrial Molding Sand: Daejin Jeonggwang Co., Ltd. has a business model that produces ceramic raw materials and industrial molding sand by precisely refining kaolin and clay. We provide customized raw materials that meet industry-specific requirements through a grinding process that crushes minerals and separates them by particle size, and a drying process that optimizes moisture content.
• Clay Mineral Research and Refining Technology: We are constantly striving to produce the world's best products through the accumulation of clay mineral research and refining technology. We manage and improve product quality through casting rate, firing and viscosity tests, and casting tests.
• Mine Development: Daejin Jeonggwang started as Daejin Enterprise in 1978 and has focused on securing raw materials by developing clay mines.

Products

• Refined Clay for Sanitary Ware: We produce various types of clay for sanitary ware, including BQ, BQ-1, UR-B, RC-A, and RC-B. This clay has low drying shrinkage, good workability, and high internal and external hardness, which reduces casting defects.
• Kaolin: We develop and produce kaolin products with advanced characteristics, such as DK-B kaolin.
• High-Purity Molding Sand Based on Patented Method: This is a high-performance molding sand that uses silica sand extracted from natural kaolin as a raw material, applying proprietary grinding and classification technology to achieve uniform particle size. It is used as a key auxiliary material in metal casting processes to maintain the shape of the mold and determine the surface roughness of the finished product.

Special Notes

• High-Quality Raw Materials: We precisely refine excellent minerals obtained from nature to achieve superior ceramic performance. We enhance quality stability by precisely blending 8 to 12 types of verified raw materials.
• Proprietary Refining Technology: Our blending technology, optimized for yield improvement, maximizes product quality and productivity. With over 30 years of accumulated technology and quality control know-how, we achieve consistent productivity and a low defect rate.
• Sanitary Ware Expertise: We have specialized in researching and producing clay and kaolin for sanitary ware for 30 years, stably supplying them to major domestic and international manufacturers. We are responsible for approximately 50% of the clay and kaolin used by major domestic sanitary ware manufacturers.

💡 A Word from JobPloy
Daejin Jeonggwang Co., Ltd. is a specialized company with over 30 years of experience in non-metallic mineral refining and processing. As it primarily handles raw materials required for the production of sanitary ware clay and industrial molding sand, it may be suitable for foreign workers interested in production, quality control, and research and development roles in related fields. Precise process management is important, and continuous skill acquisition and diligence may be required.