Exhibit 10.21
 
Supplemental Lease Agreement
 
Party A: Jiada Hu

Party B: Shenzhen Ritar Power Co., Ltd.

Party A will lease the office owned by Party A itself, which is located at Room
22 F01, Block A, Tian’an Cyber Times Building, Futian District, Shenzhen to
Party B for use of office. The size of it is 233 square meters and the original
rental shall be increased from RMB 80 Yuan per square meter to RMB 120 Yuan per
square meter. The rental per month shall be RMB 27,960 Yuan and shall be paid to
the appointed bank account before the 18th each month. The lease term shall be
one year from the 1st June 2006 to 30 May 2007.
 
Party A
 
 
      /s/ Jiada Hu      

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Jiada Hu          

 
Party B
 
 
     
Shenzhen Ritar Power Co., Ltd
(Corporate Seal)
            Date: 29 June 2006    

 
 
 

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