What are the high-quality manufacturers of agricultural zinc sulfate?

1996, due to fierce competition, Wuzheng surpassed Beiqi Futian. At this time, due to the development of agricultural vehicles, the agricultural tricycle market is weak, but the five certificates are still in production. From 1990, after several reforms, Guangxu in Zhucheng and Beijing were still unable to turn the tide. Until 2005, Huayuan was bright. The five signs also surged around 2004 and finally closed down, reaching more than 40%. Tangshan ushered in spring. Around 2003, Zhucheng Beiqi Futian jumped up and occupied a certain market. In 200 1 year, Julius declined rapidly due to internal management problems. Weifang Julies and Xingtai Yinniu fashion also came into being. Many small manufacturers have closed down one after another, and fashion has become a tripartite confrontation. At first, the main manufacturers were Jin Wa in Nanjing, the surge of agricultural tricycles in China and Debao in Texas.