There are three main forms of surety bond: bid bond, performance bond and paymentbond.
保证合同防范的是承包商违约风险，主要包括投标保证、履约保证和付款保证。
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Advance paymentbond a bank bond guaranteeing the advance payment made by the employer to the contractor in case of bankruptcy or other cause.
先期付款契约一种银行契约，保证雇主在破产或其他情况下，向承包人先行付款。
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In addition, the mere incorporation of biometrics into the payment system is likely to deter criminals, says Mike Bond, an expert in banking security at Cambridge University.