In China, according to the ;standard adaptation field and efficient range, it is divided into three levels% 26nbsp ;: национальный стандарт, министерство стандарт ( professional standard ) and enterprise ;standard.
( 1 ) National standards The national standards are formulated% 26nbsp;by the organizations recounced by the national стандартизация agency, and approved& nbsp;and% 26nbsp;issued by the национальный стандартизация %3багентства. Унифицированный %3бивнедрение of стандарты через&n bsp;the ;country. Mainly %3включает : basic raw materials, material standards ; %3промышленный % 26nbsp;and %3сельское хозяйство product стандарты ; %3 bбезопасность, здоровье and экология стандарты %3 б% 26nbsp;базовый стандарты связанные to взаимный сотрудничество and general технический language ;%2 6nbsp;общий% 26nbsp;parts, comComponents, comComponents, devices, accessories and tools, gauge standard % 3b general test and inspection method standard ; international standards that are% 26% 3badopted and equiвалентно adopted. The code of the national standard is ' ;GB ' ( that is, the first letter of the national % 3bстандартный двухсимвольный китайский pinyin, and the number is expressed by serial& nbsp;номер% 26nbsp;plus year number. For eexample, GB / T12707-91 said :& nbsp ;No.12707 национальный стандартный, выпущен in 1991.
( 2 ) выдано министерством ( professional ) стандарты are approved and issued by the компетентный%2 6nbsp;министерства , комиссии ( bureaus ), and unified standards within the scope of the отдел. It главным образом %3включает : the main product стандарты in&nb сп% 3bthis product ; general parts, компоненты and аксессуары стандарты in this product % 26nbsp;; the стандарты of equipment, tooling, tools and special raw mate риалов% 26nbsp;in the products of this department ; типичный process стандарты within % 3b% 26nbsp;scope of this part ; basic standards such as terms, symbols,% 26nbsp;rules and methods commonly used in the professional field ; the&n bsp;test% 26nbsp;and inspection method standard of some products in this product.
( 3 ) Enterprise standards ;are approved and issued by enterprises ( institutions ) or их начальники. % 26nbsp;The main contents %3include : there is no national standard and отдел % 26nbsp;( professional ) standard product standard ; in order to improve&nb сп% 3bпродукт качество, enterprises формулировать продукт стандарты with производительность %3биндикаторы выше чем национальные % 3bстандарты %3диапазон департамент стандарты. Закупка %3бор выбор of raw материалы стандарты %3 б; ;purchase or selection and self-made tools, measuring tools, standards, etc. % 3bIn principle, enterprise standards are formulated by the enterprise itself and одобрен % 3bby the person in charge of the enterprise. Однако, as the product&n бсп ;стандарт of товар доставка условия, %3бит needs to be approved by %3 bthe ;superior competent unit. Once the standard is issued, it is a % 3bтехнический% 26nbsp;регулирование. All levels of производство, строительство, scientific research, design management& nbsp;departments and enterprises, institutions, must be strictly implemented, any unit shall % 3bnot change or lower стандарт.
