There are two main methods of standard classification in Trung Quốc, one is to classify according to standardized % 3 đối tượng , and the other is to classify according to the applicable fields ;of standards.
( 1 ) Phân loại according to the object of % 3bthe standard This classification chủ yếu explains the nature of the standard itself.&n bsp;Nó divides standards into two categories : Technical standards and management standards.& nbsp% 3bKỹ thuật tiêu chuẩn are tiêu chuẩn for kỹ thuật matters that need to be được phối hợp% 26nbsp;ăng% 26nbsp;unified in the field of chuẩn hóa. Quản lý tiêu chuẩn are standards for %3 quản lý ;matters that need to be phối hợp and unified in the field of&nb tiêu chuẩn hóa sp; . Technical standards and management standards can be further subdivided as follows&n bsp;% 3a
Standards are divided into technology standards and management standards. Technical standards are divided into basic standards, product % 3bstandards, method standards, safety and environmental protection standards. Quản lý standards are%2 6nbsp;chia into national kinh tế management standards and enterprise production management standards.
( 2 ) Classification according ;to the applicable field of the standard This classification method is mainly& nbsp;used to explain the field of standard application. According to this classification % 3bphương thức% 2c the standard can be divided into 24 categories, and according to% 26nbsp% 3bthe national regulations, each category has a fixed letter as the standard& nbsp% 3bcode. Những 24 categories of standards are : toàn diện ( A % 3b) , %3nghề trồng trọt and lâm nghiệp ( B ), medicine, health and labor ;bảo vệ ( C ), mining ( D ), petroleum ( % 3bE ), energy and hạt nhân công nghệ ( F ), chemical industry ;( G ), metallurgy ( H ), máy móc ( I % 3b), thợ điện ( K ), electronic technology and computer ( L% 26nbsp;), giao tiếp and broadcasting ( M ), instrument and instrument ( N ), construction ( P ), building materials ( Q% 26nbsp;), road and đường thủy vận chuyển ( R ), railway ( % 3bS ), xe ( T ), ship ( U ), ;aviation and aerospace ( V ), textile ( W ), food ( X ), light industry and cultural and living goods (% 26nbsp;Y ), environmental protection ( Z ). This classification method is% 26nbsp;conducive to the công thức, review, điều phối and management of standards within% 26nbsp% 3bthe professional scope.
