英语翻译2.Allow SMT's representatives to audit their tier two su

楼主是在SQE的吧,还是表面贴片技术（SMT）行业的?哈哈!
1.Understand vendor's methodology to manage their sub-contractor / out sourcing process.
理解供应商管理他们的分包商/ 外购流程 的方法论
2.Allow SMT's representatives to audit their tier two supplier / sub-contractor (for critical components / raw material).
允许SMT的代表去审核他们的关键零件/原材料的二级供应商/分包商
3.Get info / document (#1 - #4) from their sub - contractors / tier 2 supplier.
从他们的分包商/二级供应商那拿到(#1 - #4)信息/文件