In China, according to the ;standard adaptation field and فعال range, it is divided into three levels% 26نبسب ;: national standard, الوزارة standard ( professional standard ) and enterprise&n bsp ;standard.
( 1 ) National standards The national standards are formulated% 26nbsp;by the %3المنظمات recognized by the national التوحيد القياسي agegency, and approved& نبسب%3باند% 26nbsp;issued by the national التوحيد agegency. الموحد %3التنفيذ of المعايير كامل& نبسب%3بذا&نبسب ;country. أساسا %3يتضمن : basic raw المواد, المواد المعايير ; industrial % 26nbsp;and %3الزراعية product المعايير ; السلامة, الصحة and %3البيئية المعايير ; % 26nbsp;basic standards dependent to mutual التعاون and general تقني %3لغة %3 ب عام% 26nbsp;parts, components, components, devices, الملحقات and tools, gauge standard&n بسب;% 3b general test and inspection method standard ; international standards that a إعادة % 3badopted and %3 بالتكافؤ adopted. The code of the national standard is % 27&نبسب ;GB ' ( that is, the first letter of the national % 3bstandard حرفين الصينية binyin, and the number is expressed by serial&nb sp;number% 26nbsp;plus year number. For example, GB / T12707-91 said :&nb sp ;No.12707 national standard, released in 1991.
( 2 ) The صادر من قبل الوزارة ( professional ) standards are approved and issued by the competent& نبسب;الوزارات , commissions ( bureaus ), and unified standards داخل the scope of the department. It بشكل أساسي includes : the main product standards in&n بسب٪ 3bthis product ; general parts, components and الملحقات standards in this % 3bالمنتج% 26nbsp;; the standards of %3المعدات,&n bsp;tooling, tools and special raw %3 بالمواد٪ 26nbsp;in the products of this department ; نموذجي عملية standards داخل&n بسب%3بثي% 26nbsp;scope of this part ; basic standards such as terms, ssymbols%2 ج٪ 26nbsp;rules and methods commonly used in the professional field ; the& نبسب;test% 26nbsp;and inspection method standard of some products in this product.
( 3 ) Enterprise standards ;are approved and issued by enterprises ( institutions ) or their superiors.% 26nbsp; main contents include : هناك is no national standard and ;قسم% 26nbsp;( professional ) standard product standard ; in order to improve& نبسب% 3bproduct الجودة, enterprises formulate product standards مع الأداء %3المؤشرات أعلى than % 3bوطني % 3bstandards and الإدارية standards. شراء or selection of raw materials standards&nb sp;; ;شراء or selection and عصامي tools, قياس tools, standards, etc. % 3bIn principle, enterprise standards are formulated by the enterprise itself and %3 تمت الموافقة عليه % 3bby the person in charge of the enterprise. ومع ذلك, as the product&n bsp ;standard of السلع delivery الشروط, it needs to be approved by % 3bthe ;superior competent unit. Once the standard is issued, it is a %3 بتقني% 26nbsp%3التنظيم. All levels of الإنتاج, الإنشاء, sعلمي research, تصميم management&n bsp;الأقسام and enterprises, institutions, must be strictly implemented, any unit shall ; لا change or lower the المعيار.
