正栄商会 List of Products and Services

This is a fertilizer that contains a balanced amount of phosphorus and magnesium! (◎ Due to its high nutrient content, it allows for labor-saving fertilization.) It is particularly effective in fields with volcanic ash soil and rice paddies. - The synergistic effect of phosphorus and magnesium activates photosynthesis and enzymes, enhancing taste and quality. - Thanks to the action of magnesium, the absorption of phosphorus improves, promoting early crop growth, tillering, root elongation, flowering, and fruiting, with effects lasting into the medium to long term.

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It is the highest quality humic acid material formed from the accumulation of plants in shallow rivers over tens of thousands of years, through the decomposition by microorganisms! Humic acid weakens the fixation of phosphoric acid in the soil, converting it into available phosphoric acid. It enhances nutrient retention and water-holding capacity with a high cation exchange capacity. ■ Effects of Humic Acid (Fulvic Acid) ◎ Direct Effects - Promotion of root development and root hair formation! Humic acid promotes root development and root hair formation. Additionally, its chelating action captures minerals and trace elements, facilitating nutrient absorption. ◎ Indirect Effects - Improvement of soil physical properties! It serves as a habitat and food for soil microorganisms, enhancing their activity and forming a granular structure in the soil. - Reduction of phosphoric acid fixation! The chelating action of humic acid transforms fixed phosphoric acid into a form that plants can absorb. - Improvement of nutrient retention! Humic acid carries a negative charge, allowing it to retain cationic elements such as calcium, potassium, and magnesium, thus helping to prevent the leaching of fertilizers to some extent.

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Urea has the highest nitrogen content among nitrogen fertilizers. Additionally, nitrogen in urea form is a neutral, non-sulfate fertilizer both chemically and physiologically. - It can be dissolved in water for foliar application. - Measures have been taken to prevent caking. - The fine granules are prilled urea. - The large granules are coated to prevent caking. ■ Characteristics and Effects of Nitrogen - The nitrogen component of urea fertilizer is also known as "leaf fertilizer," and it is effective for the growth of leaves and stems. Nitrogen is an essential component of proteins that make up the plant's body. - It dissolves well in water and has an immediate effect. Foliar application during times when the roots are weakened or when symptoms of nitrogen deficiency appear can help maintain and restore growth.

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SK Mineral Mag is a natural magnesium fertilizer made by refining bittern derived from seawater. Since it utilizes seawater from salt fields, it contains high-quality mineral components that enhance the taste and quality of crops. Additionally, being water-soluble, it has immediate effects and is ideal for top dressing. ■ Features and Effects of Magnesium Sulfate - Magnesium is an essential component of chlorophyll in plants, which is crucial for photosynthesis. - Magnesium aids in the absorption of phosphorus, leading to improvements in quality such as sweetness, glossiness, and fleshiness in fruit and vegetables. - Magnesium enhances the effectiveness of silica, contributing to increased resistance to pests and diseases as well as improved cold tolerance.

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• Organic Natural Materials

The process from mining to refining is consistently carried out by a single company, ensuring not only stable supply but also stable quality. Due to its high melting point and minimal shape changes from heat, it can be widely used in refractory materials and flooring materials.

• Ceramics

◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆ First 10 customers Free sample book giveaway ◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆◇◆ There are various types and grain sizes of abrasive sand... It's hard to know how to choose based on the intended use... We are currently giving away a free sample book that includes various types of abrasive sand we handle. The listed grain sizes range from F8 to F220. ■ Some of the included content SK Random, White Random, Boron Carbide, etc... You can use it not only for selecting the grain size of abrasive sand but also as teaching materials for new employees. ◎ The catalog is currently available with examples of abrasive sand applications. ◎ If you would like a sample book, please indicate so.

• Other abrasives
• Ceramics

White corundum is an abrasive material produced by melting and reducing alumina-based raw materials in an electric furnace, followed by solidification, crushing, and granulation. It is a white substance refined and crystallized from high-purity corundum, characterized by high hardness and excellent grinding power. Its white color allows for processing without staining the color of the workpiece. For more details, please contact us or download the catalog.

• Other abrasives

Carborundum and Green Carborundum are well-received products from Shoei Shokai Co., Ltd., which boasts a long track record. They are proven long-selling grinding materials delivered with stable quality. Manufactured in a factory certified with "ISO9001," they offer high quality. Imported from China, they are available at an attractive price that contributes to cost reduction. We will deliver within "3 days including the order date." For inquiries about quotes or if you would like samples, please contact Shoei Shokai by phone or fax. 【Features】 ○ Reliable products ○ High quality ○ Proven long-selling products ○ Attractive prices ○ Immediate product delivery For more details, please contact us or download the catalog.

• Other abrasives

Alumina slag (Fe-Si No. 6) reacts quickly and is easy to adjust, making it already adopted by various companies and well-received for being "easy to handle." It can be used for applications such as heavy liquid separation materials, abrasives, and construction aggregates. It will be delivered in a bulk bag. As it is an imported product, it will be delivered to the designated location from Yokohama or Osaka. For more details, please contact us or download the catalog.

• Other metal materials

Brown alumina abrasive SK Arandam is an abrasive material produced by melting and reducing alumina-based raw materials in an electric furnace, followed by solidification, crushing, and granulation. It is brown in color and contains an appropriate amount of titanium oxide. It can be used for various applications such as blasting abrasives and refractory materials. The hardness of SK Arandam is a Vickers hardness of 2,000 to 2,200 kg/mm², and a new Mohs hardness of 12. 【Features】 [Arandam A] ○ Alumina-based raw materials are melted and reduced in an electric furnace ○ Brown in color and contains an appropriate amount of titanium oxide (made in China) ○ Usable for various applications [SK Arandam] ○ Chemical composition: Standard value equivalent to JISR6111 ○ Specific gravity: 3.96 For more details, please contact us or download the catalog.

• Other abrasives

Boron carbide (B4C) is a ceramic with hardness following diamond and cubic boron nitride. In addition to its applications as an abrasive for precision grinding of cemented carbide molds, processing of cemented carbide parts, and polishing of gemstones, it is also used in refractory materials, neutron absorbers, and SiC sintering aids. 【Features】 - Hard abrasive material - Usable in refractory materials, SiC sintering aids, etc. - Slows down neutron particle velocity - Non-magnetic - Does not react with acids or alkalis - Heat and corrosion resistant - High wear resistance For more details, please contact us or download the catalog.

• Ceramics