Qingdao Sonef Chemical Co., Ltd is a professional manufacturer and exporter for fertilizers and technology in China. Established in 2004, we have built good cooperation relationship with many research institutes, such as Shandong Agriculural Universtity, Shandong University, Zhejiang University, Shenyang Agricultural University, as one work station of Chinese Academy of Engineering and as the main research center in Shandong Province. We have been awarded 26 national patents by authority.
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