本公司提供输变电成套项目及新能源电站工程的建设、安装等履约义务，在合同

The company provides performance obligations for the construction and installation of complete sets of power transmission and transformation projects and new energy power station projects, and evaluates the contract on the effective date of the contract to determine whether the contract performance obligation meets the conditions of "performance within a certain period of time". <br>When the conditions of “performance within a certain period of time” are met, the company recognizes revenue in accordance with the progress of the contract within that period of time. The company adopts the investment method to determine the appropriate performance progress, which is determined according to the ratio of the accumulated actual contract costs to the estimated total cost of the contract. When the performance progress cannot be reasonably determined, if the cost incurred is expected to be compensated, the revenue shall be recognized according to the amount of the cost incurred until the performance progress can be reasonably determined; if the cost incurred is not expected to be recovered, it shall be immediately Recognized as expenses, not revenue. If the total cost of the contract is likely to exceed the total contract revenue, an estimated contract loss will be formed, included in the estimated liability, and recognized as the current cost.

The Company provides transmission and conversion complete sets of projects and new energy power plant project construction, installation and other performance obligations, on the effective date of the contract to assess the contract, to determine whether the contract performance obligations meet the "performance within a certain period of time" conditions.<br>When the "performance within a certain period of time" condition is met, the Company recognizes revenue in accordance with the performance progress during that period. The Company uses input method to determine the appropriate performance schedule, according to the cumulative actual cost of the contract as a proportion of the total estimated cost of the contract. Where the progress of performance cannot be reasonably determined, the costs incurred are expected to be compensated, and the revenue is recognized in accordance with the amount of costs incurred until the progress of performance can reasonably be determined; If the total cost of the contract is likely to exceed the total contract revenue, the projected loss of the contract is formed, included in the projected liability and recognized as the current cost.

The company provides performance obligations for the construction and installation of complete power transmission and transformation projects and new energy power station projects, evaluates the contract on the effective date of the contract, and judges whether the contract performance obligations meet the conditions of "performing within a certain period of time".<br>When the conditions of "performing within a certain period of time" are met, the company shall recognize the revenue according to the performance progress within that period of time. The company adopts the input method to determine the appropriate performance schedule, which is determined according to the proportion of the accumulated actual contract cost to the estimated total contract cost. When the progress of performance cannot be reasonably determined, if the cost incurred is expected to be compensated, the revenue shall be recognized according to the amount of the cost incurred until the progress of performance can be reasonably determined; if the cost incurred is expected to be impossible to recover, it shall be immediately recognized as an expense when it occurs, and no revenue shall be recognized. If the total cost of the contract is likely to exceed the total revenue of the contract, the estimated loss of the contract will be formed, included in the estimated liabilities, and recognized as the current cost.<br>