To develop market demanding organic thiochemicals based on sulfur resource in China and to raise its social/economic benefit are pointed out.

In this paper, reaction mechanisms and characteristics of electrochemical fluorination is expatiated, applications of organofluorine chemicals is introduced, organofluorine compounds applied in medicine field is introduced, application foreground of fluorine contained chemicals is prospected.

Sketching on methods of measuring apparent density of inorganic chemical products;

Firstly,the text studied on natural environment,production environment and society environment in Crested Ibis Nature Reserve,analyzed the feasibility of developing organic food,more discussed the form of industry environment about organic food,on the base,built a estimating system about industry environment of organic food,and expected the advantages of the estimating system.

The article analyzes the range and characteristics of Chinese agro-product certification system,compares the common and difference among organic food,green food and non-pollution products,int.