(1) The concept of environmental standards The environmental standard is the general environmental gas standard of various technical specifications formulated by the state in order to maintain environmental quality and control pollution, thereby protecting the health, social wealth and ecological balance of the population. It is a legal technical indicator and standard, and is the environment. The technical basis for protecting law enforcement and management. Environmental standards have evolved with the establishment of the legal system of environmental resources. In the G[} era of the 24th century, many countries have established environmental standards. The International Organization for Standardization (ISO) began to develop environmental basic standards and methodological standards in 1972 to unify the terms, terms, units, and sampling, monitoring, and analysis methods in environmental protection work in various countries. In 1973, China received the comprehensive pollutant discharge standard for the "three-waste emission test standards for industrial". As of 2002, China has formulated 477 national environmental protection standards. In 1979, the Environmental Protection Law (Trial) was promulgated. "The State Council has been authorized to work with relevant departments to formulate environmental protection standards and to require pollutant discharge units to comply with the environmental standards set by the state, so that there is a legal basis for the formulation and implementation of environmental standards. Many environmental laws and regulations since then. The system of environmental standards has been stipulated. The "Measures for the Administration of Environmental Standards" promulgated by the State Environmental Protection Administration on April 1, 1999 marks the basic formation of China's environmental standards system. China's environmental standards are both a branch of the standard system and an important part of the environmental protection law system. (2) The nature of environmental standards The legal nature of environmental standards is mainly manifested in: First, environmental standards are normative. One of the basic characteristics of the law is its normativeness, which is the rule and ruler that adjusts people's behavior. The environmental standard is the same as the law. It is also a normative behavior rule. The difference between the same investment law is that it does not stipulate people's behavior patterns and legal consequences through legal provisions, but through some specific data, indicators, Technical specifications are used to represent the boundaries of behavioral rules to regulate people's behavior. Second, environmental standards are mandatory. Environmental quality standards, pollutant discharge standards, and other environmental standards that must be enforced by laws and regulations are mandatory standards that must be implemented. Environmental standards other than the standard of the bow are recommended environmental standards, and must be enforced if they are cited by mandatory environmental standards. Again, environmental standards are legally binding. Environmental standards are one of the main basis for the implementation of environmental protection laws and regulations, and are the measure of the quality of environmental quality. For example, the environmental quality standards are the basis for the development of environmental standards and environmental planning, as well as the statutory basis for judging whether the environment is to be polluted and to set pollutant discharge standards. The pollutant discharge standards are more legal supervision and monitoring of various pollutant discharge activities. In order to determine whether the sewage disposal activities are illegal, in some cases, the violation of pollutant discharge standards shall bear corresponding legal liabilities. Environmental standards are equivalent to ensuring that people's lives and health and property are not harmed by pollution. Precision Components Of Medical Equipment WUXI SHINDEN MODERN INTELLIGENT TECHNOLOGY CO.,LTD , https://www.myshinden.com