Exhibit 10.20 Technology Development Agreement

Based on the existing lectotype software program, the data in the database is input. The data in the database includes the existing fan weight (rolling and sliding), starting torque (Actuator selection) and original no dimension point. Additionally, the function of bidding part for fan selection (including lectotype quotation list and successful bid scheme, etc.) is enlarged and perfected.

Integrate the pneumatic calculation and structure strength from similar design and variation design including critical speed calculation of the rotor, impeller strength, rigidity calculation, rigidity calculation of casing, startup time, GD2 calculation and finite element analysis, etc.

Second development of the connection between the fan and solid-work, and establish the 3D model parameterization for fan components.

The commercial software (CFD) from fluent Company is used to simulate the internal flow field of the fan and establish the value test platform of the fan as well as realize the value and visualization of test. The verification of static-blade adjustable axial fan model including effect and replacement of every component and model performance determination and expansion was finished in 2006. The geometric parameter of the dynamic blade and the static blade were defined as well. At the same time, the analysis and optimization of blower performance has been completed. For existing model machine in the factory at present, CFD flow field analysis was performed to determine the correctness of original model of the machine and modification opinion.

Study the effect of fan performance from various components and accumulate the data as well as improve the technical content and level.

The value platform is used to develop the new product. The development of single-stage high-speed blower (three-dimensional flow impeller) will be emphasized in 2007. This type of blower is mainly used in the petrochemical industry and sewage aeration treatment to shorten the R & D period and reduce the design cost as well as increase the market competitive power.

To incubate talents for party A, the party A will select 3 persons to participate in the R & D work every year. The technical center will provide the special assignment for research. The application of value platform and setting of boundary condition will be mastered within one year. They can solve any issues of company in the product development.

Carry out the application research. The CFD technique is used to develop the new type of blade and improve the fan efficiency as well as reduce the noise. The party A is responsible for achievement transfer. For the detailed project, the party A will provide the market demand and annual plan.

Wuhan Blower Co., Ltd. and Huazhong University of Science & Technology will cooperate in the joint establishment of a fan research center to combine production with teaching and research.

Central China Science & Technology University will finish the listed content in 2007-namely, develop an integrated platform for fan design and numerical value test.

The platform for development to be used by the fan research institute is used for new product development. The party A will provide the annual development plan. Beside the development expense of this project, the party A will provide 1.5% of sales amount of new product annually as technical input.