The Company has been devoting to Research, Develop and Produce the Series of Metallurgical & Foundry Additions for over ten years. The products and relative technical services have been provided for the production of important and large equipment, which were listed in recent several“Five year”State Plans and modernizing process technology of some Steel & Iron Plants. Such as the Series of Desulphurazers of Calcium Oxide & Carbide with low melting point, Compound Agents for Refining and Super Agent for Slag off are Patented Products. The Principles of Business are:
Quality Class First Users Supreme
Better More Better Innovation Never Stop

1. 1990 Qiqihar-SLD Metallurgical Materials Co., Ltd. was established. Supplied powder additive of molten steel by injection & blowing, and compound refining agent of LF for Beiman Steel Works.
2. 1991 Start to supply powder desulphurizer for No.3 Steel Making Plant of Anshan Steel Works.
3. 1991 Start to supply compound refining agent for further desulphurization (S＜0.002%) used for the products of nuclear power station and Reactors of hydrogenization for petrochemical equipments, which were produced by the First Heavy Machinery Group.
4. 1992-1997 Start to develop new type foundry additives of series for purring & modification, which were used to produce high grade castings such as large bed of sintering machine, bed of NC machine-tool, case of used nuclear fuel transporting & storing, etc.
5. 1998 Develop the complete set of equipment & technology of swing machine-stirrer for continuous desulphurization and slag off by tangent from molten iron of cupola. This product already used in Huangshi-Xinbao Pipes Co., Ltd., and it already applied for patent right.
6. 1999 Developed to success the compound desulphurizer of calcium carbide with low melting point, and already applied for patent right.
7. 1999 Developed to success the Premelting-low sulphur slag of Al-Ca, and already applied for patent right.
8. 2000 YT-SLD Metallurgical Materials Co., Ltd. was established. Head Office moved to Yantai.
9. 2001 YT-SLD Jiangyin-product base was established.
10. 2002 Awarded the titles High grade & Newly Enterprise of Shandong Province & Patent Star Enterprise
11. 2002 Certified the Quality Control System ISO9001: 2000
12. 2003 Developed to success the Super plant for separate iron-slag & desulphur, and already applied for patent right. This product is already used for Chengde-Jianlong Iron & Steel Works.
13. 2003 Developed to success the Super plant for continuous desiliconize & auto-separate for iron-slag, and already applied for patent right.
14. 2004 Won the right to do overseas business by ourselves.