Invention patent for multi-element chelated fertilizer

Invention patent of urea sulfate

Potassium sulfate invention patent

A method for preparing chelated fertilizers to enhance the chelating capacity of trace elements in compound fertilizers

Invention patent for activated humic acid

Invention patent of self sampling wrapping kiln

Invention patent of automatic dust removal system

Invention patent of drying kiln

Invention patent of manual folding device

Invention patent of forced granulator

Invention patent of crusher

Invention patent of urea sulfate reactor

Invention patent of vertical crusher

Invention patent of cooling kiln

Invention patent of wolf tooth crusher

Invention patent for automatic cleaning of roller screen

Patent for invention of compound fertilizer spray oil prevention system

Invention patent of flushing fertilization screening device

Invention patent of fertilizer mixer

Invention patent of wrapping kiln

A comparison of the fertilizer efficiency of Baodejun Jin Dashengyuan chelated Fertilizer, a demonstration user in Shanhe Village, Huangtukan Town, Donggang City, Dandong City, Liaoning Province

A comparison of the fertilizer efficiency of the demonstration user Xia Xianglei Jin Dashengyuan chelated Fertilizer in Liujing Village, Peiqiao Town, Yongcheng City, Henan Province

A comparison of the fertilizer efficiency of Jin Dashengyuan chelated fertilizer by demonstration user Sun Hongling in Liuyuan Village, Wolong Township, Yongcheng City, Henan Province

A comparison of the fertilizer efficiency of Gao Dalinjin Dashengyuan whole Fertilizer from Model Si Hu, Sanyi Jing Village, Shuangshan Village, No. 8 Town, Yushu City, Jilin Province

The fertilizer efficiency demonstration field of peanut-specific fertilizer in Suizhong County, Liaoning Province

The fertilizer efficiency demonstration of the tomato demonstration field of Zhang Jian, a demonstration user in Liuhegou Village, Liuhegou Town, Xinmin City, Liaoning Province

The fertilizer efficiency demonstration of the tomato demonstration field of Sun Guilan, a demonstration user in Group 8, Wanghu Village, Daniu Town, Tai 'an County, Liaoning Province

Fertilizer efficiency display of peanut demonstration field by Zhang Hongyu, xinhuanghutun demonstration user, shuangqingshan village, Momoge Town, Zhenlai County, Jilin Province

A comparison of fertilizer efficiency in the demonstration field of Dashengyuan chelated corn by Liu Fengjin, a demonstration household in Rocket Town, Wangkui County, Heilongjiang Province