... , Mg, Mn, Zn etc. SHANDONG LVFENG FERTILIZER CO.,LTD. is established in 1999,and located in ZIBO CITY, SHANDONG; specialized in manufacturing of N.P ... ... We also could produce different grades of NPK compound fertilizers (in granular, soluble powder and liquid forms) according to the demand ... -P-K and trace element (Ca, Mg, Mn, Zn etc) in the compound fertilizer for customer requirements