What is the difference between ASTM and JIS standards? Which of the two is more recognized in the Chinese market?

1 ASTM standard classification ASTM standards are divided into the following six types.　　(1) Standard Test Method (Standard Test Method) It is for the identification, testing and evaluation of materials, products, systems or services, quality, characteristics and parameters and other indicators of the prescribed procedures.　　(2) Standard Specification (Standard Specification) It puts forward technical requirements and gives specific instructions for materials, products, systems, or projects, and also puts forward the procedures to be adopted to meet the technical requirements.　　(3) Standard Practice A procedure that describes one or more specific operations or functions, but does not produce test results.　　(4) Standard Terminology describes or defines terms, symbols, abbreviations, acronyms, and acronyms.　　(5) Standard Guide (Standard Guide) It selects a series or explains the usage, but does not introduce the specific implementation method.　　(6) Standard Classification (Class. fication) It is based on its source, composition, performance or use of materials, products, systems, or specific services JIS Standard: Japanese Industrial Standards (JIS) is the most important and authoritative of Japan's national standards. Developed by the Japan Industrial Standards Committee (JISC).　　Refinement is divided into civil engineering and construction, general machinery, electronic instruments and electrical machinery, automobiles, railroads, ships, iron and steel, non-ferrous metals, chemicals, fibers, mines, pulp and paper, management systems, ceramics, daily necessities, medical and safety appliances, aerospace, information technology, and other **** 19 items. As of February 7, 2007,*** there are 10,124 current JIS standards.　　In Japanese, JIS is also transliterated as ジス, and is formulated and reviewed by the Japan Industrial Standards Committee (JISC), which is the most important and authoritative of Japan's national standards. According to the Japanese Industrial Standardization Law, JIS standards cover a wide range of industrial fields, in addition to specific standards or technical specifications for pharmaceuticals, pesticides, chemical fertilizers, silk, food, and other agricultural and forestry products. The contents of JIS standards include: product standards (product standards) The content includes: product standards (product shape, size, quality, performance, etc.), method standards (test, analysis, testing and measurement methods and operation standards, etc.), basic standards (terminology, symbols, units, priority numbers, etc.). Specialties include: construction, machinery, electrical, metallurgy, transportation, chemical, mining, textile, paper, medical equipment, ceramics and daily necessities, information technology, etc. Since 1990, the total number of JIS standards has been maintained at about 8,200. Of these, about 4,000 are product standards, 1,600 are method standards, and 2,800 are basic standards. As of the end of March 2006, there are 9,728 JIS standards in force.ASTM standards can only be said to be more widely used in the Chinese market