Statistical Unit in Construction  refers to corporate enterprise engaged in the construction of buildings and structures and
in the installation of equipment. A corporate construction enterprise should meet the following 3 requirements:①being set up
in line with relevant legal basis, having its full name, organization and location, and capable of taking civil liabilities;
②independently possessing and using its assets and assuming its liabilities, and entitled to sign contracts with other
institutions; and ③ making independent accounts of its profits and losses, and capable of compiling its own balance sheet.

Gross Output Value of Construction (Output Value of Projects Under Construction) refers to total of construction
products, expressed in money terms, completed by construction and installation enterprises during a given period of time. It
includes:

(1)Output value of construction projects, that is the value of projects covered by the project budgets;

(2)Output value of installation projects,  that is the value of the installation of equipment, (excluding the value of the
equipment to be installed);

(3)Output value of repair of buildings and structures, that is the value created through the repairs of buildings or structures,
but does not include the value of buildings or structures being repaired and the value of the repair of production equipment;

(4)Output value of manufactured non-standard equipment, that is the value of non-standard production equipment (including
raw materials and manufacturing cost) made for the construction project, and the equipment manufactured by subsidiary
workshops.

Value-added of Construction refers to the final result of the activities of production and management of construction in
monetary terms in the reference period. At present, the value-added of construction is calculated with the income approach.
In other words, it is the sum of income of various production factors in the production process. The formula is as follows:

Value-added of construction=depreciation of fixed assets in the year+wages payable+welfare expenses payable+insurance
premium and tax for waiting for employment in the administrative expenses +taxes and surcharges on project
settlement+profit gained from project settlement.

Floor Space of Buildings Under Construction refers to floor space of buildings under construction during the reference
period, including newly started buildings, buildings started earlier and continued during the reference period, and buildings
suspended earlier but restarted during the reference period, buildings completed during the reference period, and buildings
under construction and then suspended during the reference period.

Floor Space of Buildings Completed refers to the floor space of buildings that are completed in the reference period in
accordance with the requirements of the design, up to the standard for putting them into use, and have been checked and
accepted by concerned departments as qualified ones.

Total Number of Machinery and Equipment Owned by the End of Year refers to the number of machines and
equipment owned by the enterprises, and listed as the fixed assets of the enterprises by the end of the year,  including
machinery and equipment for construction, production and transportation.

Total Power of Machinery and Equipment Owned by the End of Year  refers to the total power of machinery and
equipment owned by  the enterprises, and listed as the fixed assets of the enterprises by the end of the year,  including
machinery and equipment for construction,  production and transportation. The power of the machinery is calculated on basis
of the designed or verified capacity, covering the power of the machinery/equipment and the separate power equipment
serving the machinery/equipment (such as electric motors), but excluding welders, transformers and boilers. The unit used for
the calculation of power is kilowatt, with horsepower converted to kilowatt by 1 horsepower=0.735 kilowatt.

Income from Settlement of Projects refers to the income received by the construction enterprise from the contracted
project through settlement procedures, and other charges to the contractoree as operational costs in addition to the value of
the project, such as temporary facility fee, labour insurance premium, moving cost of construction equipment, as well as
various types of claims to the contractee.

Profit from Settlement of Projects refers to profit realized through settled projects. It is calculated with the following
formula:

Profit from Settlement of Projects=Income from Settlement of Projects-Settled Cost-Settled Taxes and Other Cost

Total Revenue of Enterprises refers to the sum of income from production and operation of enterprises, including income
from settlement of projects and other operational income, namely:

Total Revenue of Enterprises=Income from Settlement of  Projects+Other Operational Income