无论怎样快的英文：
at the soonest

He who handles a nettle tenderly is soonest stung.
轻握荨麻者最快被刺。

He who handles a nettle tenderly is soonest stung
与恶人交往而讲仁义,必受其害

He who handles a nettle tenderly is soonest stung. ——John Lyly
遇上棘手的事若优柔寡断，必受其害。——黎利

We hope the new prices will meet your requirement and look forward to receiving your initial order soonest.
我方期望这个新的价钱将会达到贵方的要求，期待很快收到贵方的第一个订单。