这就需要更加优质的教材、合格的师资和适合当地的教学方法，可以说挑战在增加，任务更艰巨。
For that they would need high quality teaching materials, more qualified teachers and more tailored made teaching methods.
选择可以信赖和合格的供应商以及后备供应商，对于维护一个优质供应链运营来说是非常重要的。
Choosing reliable and qualified suppliers and back-up suppliers, is critical to maintaining a quality supply chain operation.
注： 全部选用优质的进口成品膜片， 膜片组件在制造过程中全部检查， 合格后再进入装配线。
Good quality imported membranes shall be selected and used for all the valves, with each part checked in each manufacturing procedure, and put into the assembly line conforming to all the procedures.
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