English to Swedish Law/Patents Law: Contract(s)

Ett kontrakt: "The above securities shall be in the form of a bank guarantee without time limit. Advanced payment guarantee for down payment (1st payment milestone) shall be valid until milestone H26, the other advanced payment guarantees – shall be valid until the next milestone requiring and advanced payment guarantee. Performance Bond for the warranty period shall be valid until the end of the Warranty Period. A credit insurance guarantee may be approved. The security must be approved by the Customer before payment takes place."