Department of International Cooperation， Science and Technology of Ministry of Water Resources， P. R. China has the mandate of managing the formulation and revision of water technology standards in China.
Translation of this standard from Chinese into English is organized by Department of International Cooperation， Science and Technology of Ministry of Water Resources， P.R China in accordance with due procedures and regulations applicable in China.
The English version of this standard is ident

Introduction to English Version
Foreword
1 Scope
2 Normative References
3 Terms and Definitions
4 Classification
4．1 Classification and Symbols
4．2 Main Parameter Series of Concrete Mixers
4．3 Model of Concrete Mixers
4．4 Basic Parameters
5 Technical Requirements
6 Test Methods and Inspection Regulations
7 Marking， Packing， Transportation and Storage
8 Warranty Period