問(wèn)你們的產(chǎn)品:
How would you service =你如何維修
these products =這些產(chǎn)品
(when and if needed) 當(dāng)或如果我們需要時(shí)?
意思:他是有心要買你的產(chǎn)品,但他想先知道,如果壞了,你如何修－－派人員過(guò)去他
的國(guó)家...我們的產(chǎn)品保修一年，如果一年內(nèi)遇到問(wèn)題
1， 我們公司的專業(yè)人員會(huì)指導(dǎo)維修，更換零部件，我們公司將會(huì)免費(fèi)寄送。
2，往返維修。

這些機(jī)器質(zhì)量很好的，如果沒(méi)有人為的操作不當(dāng)，壽命很長(zhǎng)。
這段話幫忙也翻譯下。精準(zhǔn)點(diǎn)就好，多謝。

買家是否住國(guó)外呢？

"Our products carry one-year warranty for maintenance. If there is any problem arises within the year:

1. Our professional technicians will guide you on maintenance and changing of parts. Our Company provide free of charge.
   

2. To and fro for maintenance 往返維修=這是什么意思???

Please note the products are of high quality. Without human error or mishandling, the products enjoy long life span. "