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As an important raw material for modern industry, plastics are widely used in various fields. In order to ensure the quality and safety of plastic products, all countries have formulated corresponding industry standards.

ISO International Standards Organization
 

ISO (International Organization for Standardization) is one of the main bodies that develop international standards. In the field of plastics, ISO has developed a series of international standards for plastic materials, products, test methods and performance requirements. For example, ISO 1133 specifies methods for the determination of the bulk density of plastic pellets, while ISO 527 deals with the determination of the tensile properties of plastics.
 

ASTM American Society for Testing and Materials
 

ASTM (American Society for Testing and Materials) is the world's leading standards development organization for the testing of materials, products and systems. In the field of plastics, ASTM has developed a series of standards for testing, analyzing, and evaluating the properties of plastics, such as ASTM D638 for determining the tensile strength and elongation of plastics.
 

GB National Standards
 

GB (national standards) is a system of standards developed and implemented in China. In the field of plastics, GB standards include the basic properties of plastic materials, application requirements, test methods and other aspects. For example, GB/T 1040 specifies the determination method of plastic tensile properties.

Domestic and foreign plastics industry standards have certain differences in testing methods, performance requirements and application areas, but the overall trend is toward more stringent, comprehensive and environmentally friendly development. With the improvement of environmental awareness and the requirements of sustainable development, the future plastics industry standards will pay more attention to the evaluation of environmental performance and restrict the use of hazardous substances.
At the same time, with the continuous development of international trade, mutual recognition and docking of domestic and international plastics industry standards will also become an important trend. This will help promote cooperation and communication in the global plastics industry, and promote technological innovation and industrial upgrading.