cell phone jammer will be can be modified

the Bank has no right to oppose the claim without first B, I agree to travel to fulfill the terms of the contract signed by both parties or other contract documents the changes, add or modify, in any case are not exempt from my line any liability under this guarantee, I received a line here that does not require such changes, additions or changes to notice of this guarantee from Party B receives advance payments from the contract until the advance payment until the completion of all deductions valid bank authorized representative (print):cell phone jammer can completely stops all of cell phone calls.  Bank of Authorized Representative (Signature): Bank Name: Bank Seal: Date: Bank address: 39 years on Shanghai Metro Line 13 Phase I, World Expo site dedicated traffic tie-line equipment supply and engineering services PSD Tender No.: 10248306 Annex 8 Shanghai Metro construction management change management approach first ( Purpose and Basis) To strengthen the city's rail transit construction management construction site power, regulate the conduct of parties, strengthen the responsibility of consciousness, the implementation of security responsibility to improve the overall management of rail transit construction standards, to promote supervision units, construction units and other units involved to establish functioning and effective "self-restraint, self-protection, continuous improvement,"cell phone jammer has the function of high and low setting.  the long-term mechanism, comprehensively promote the healthy and orderly construction of rail transit to carry out, according to existing laws and regulations and relevant provisions, combined with the construction of the actual circumstances of this approach. Jamming coverage of cell phone jammer
The second ( Scope of Application) These Procedures apply to the Shanghai Metro area supervision units, construction units, reconnaissance units, design units and other units involved. Article 3 (Administrative Department) Shanghai Shentong Group Co., Ltd. is the construction of rail traffic management center construction supervision units, construction units and other construction management department in charge of the change of Shanghai Shentong Group Co., Ltd. is responsible for contract management of the Department of changes to the B unit integrity of landing platform, tender evaluation and follow-up work after the link. How far the jamming coverage of cell phone jammer will be can be modified. Shanghai Shentong Metro Group Co., Ltd. under The project company is responsible for rail transit construction supervision units, construction units and other construction management change management of the specific work Article 4 (Basic Principles) of the supervision unit, construction unit and other units involved in the tender should be entered into the project team in place commitment, and in accordance with the contract, strict compliance with tender promises, and consciously accept the supervision of the Party.