It's the newest model and has alt the latest functions.

这是最新的款式，有所有最新的功能。

It's the newest model and has all the latest functions.

这是最新的款式，有所有最新的功能。

Can you explain it in detail?

可以再详细解释一下吗?

How about the after sale service of your product?

你们这个产品的售后服务怎么样?

How about the after sale service of your product?

你们这个产品的售后服务怎么样?

We offer a 90-day return policy.

我们提供90天退货保证。