商务英语写作范文:海运包装的详细指示

Dear Sirs:

　　Please pay your best care to pack the goods so as to withstand the hazards of ocean transportation and water-proof it against the tropical climate.

　　Also please stencil our shipping marks five inches high and give gross and net weight,port of destination,country of origin and a B in the rectangle as the main mark of each case.?　　

　　Yours,