This standard specifies the basic guidelines for hydrogeological, engineering, and environmental geological work in the geological exploration of coal resources; it focuses on the technical requirements and working methods of the exploration. This standard is applicable to the design and preparation, exploration and construction, geological research, geological report preparation and review, resource / reserve evaluation, mining right assessment, feasibility study at each stage of geological exploration of coal resources.

This Standard specifies the silicon metal.

This Standard specifies the requirements, inspection methods, inspection rules, packaging, marking, storage and transportation of CR1211, CR1212, CR1213 in CR121 series and CR1221, CR1222, CR1223 in CR122 series of the sulfurregulated chloroprene rubber.

This standard specifies the procedure for measuring the transformation temperature of NiTi shape memory alloys. The value indicated in the SI unit is considered standard. This standard does not indicate that it involves safety related to the use of the standard. It is the responsibility of users of this standard to establish special operating procedures to ensure the safety of use and personnel health before use, and to determine the applicability of the management scope.

This standard specifies the terms and definitions, classification, quality requirements and hygienic requirements, inspection methods, inspection rules, labeling, packaging, storage, and transportation requirements of peas. This standard applies to purchasing, storage, transportation, processing, and sale of commercial peas.

This standard specifies the terms and definitions, classification code, size, shape, weight and allowable deviations, technical requirements, test methods, inspection rules, marks and quality certificates, packaging, transportation and storage requirements of bright steel. This standard is applicable to stripped, ground and polished round steel with high requirements for surface quality.