How do we alleviate and solve this contradiction? We must increase the maintenance guaranteeefficiency to find out the methods.
如何缓解甚至解决这个矛盾，必须从提高维修保障效益上找出路。
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W: We ask for full payment at sight, because we guarantee 90% mechanical efficiency for all our products. You don't have the same guarantee from other suppliers. The usual percentage is around 85.