Qingdao Sobel Crop Nutrition Co.,Ltd.,one of the main producers in NPK nutritional solutions in China,is a subsidiary of Qingdao Plant Protection Star Technology Co., Ltd.,specialized in R & D,production and promotion of specialty water-soluble feitilizer.
On March 31st,2010,the joint venture,SQM STAR, formed by SQM and Qingdao Plant Protection Star Technology Co., Ltd. has officially been inaugurated in Qingdao, Shandong province, China. SQM, the world's largest manufacturer of Iodine, Lithium and Potassium Nitrate,is a major supplier of specialty plant nutrition and related services. And at the same time ,through the SQM's cooperation with AKZO NOBEL,Sobel has the most superior chelated metal trace elements.  
Sobel's product line has a flexible setup to meet the needs of each crop and customer, ranging from macro- and micronutrients to solutions by stage and by crop. With this inauguration,SQM STAR consolidates its market position with the commitment to deliver quality products as well as customized nutrition solutions.
The complete Specialty Plant Nutrition portfolio of Sobel includes nutritional solutions by macronutrients,anti-stress product line,all represented by brands Ultralsol? ,100% water soluble and free of chloride??esigned for fertigation application??rop? for soil application and Speedfol? for foliar application.