商務(wù)英語寫作范文:指定木箱包裝的材料及規(guī)格

Dear Sirs,

　　Packing in strong wooden cases is essential.

　　Cases must be battened,nailed and secured with metal straps all over.

　　Overall measurements of each case must not exceed 4′(H)×2′(W)×2′(D).?　　

　　Yours,