Những sản phẩm này còn mới.

Những is a plural marker. It tells you that sản phẩm is being understood as products rather than just product.

So:

• sản phẩm = product / products
• những sản phẩm = products, some products, these products

Vietnamese does not always have to mark plural, but những is a common way to make it clear.

In Vietnamese, demonstratives such as này usually come after the noun.

So:

• sản phẩm này = this product
• những sản phẩm này = these products

This is a very common word order in Vietnamese:

• noun + này = this / these
• noun + đó / ấy = that / those

So even though English says these products, Vietnamese says something closer to products these.

In this sentence, còn means still.

So còn mới means still new.

It suggests that the products have existed for some time, but they are nevertheless in new condition.

Examples:

• Máy này còn tốt. = This machine is still good.
• Quần áo này còn mới. = These clothes are still new.

Vietnamese often does not need a verb like to be when describing something with an adjective.

So:

• Những sản phẩm này còn mới. literally works like
• These products still new.

This is normal Vietnamese grammar.

You will often see this pattern:

• Nhà lớn. = The house is big.
• Cô ấy đẹp. = She is beautiful.
• Sản phẩm này mới. = This product is new.

You do not add là here. Using là before an adjective would usually be incorrect in this kind of sentence.

Here, mới is an adjective meaning new.

So:

• mới = new
• còn mới = still new

Be careful, because mới can also have other meanings in other contexts, such as just or only recently.

For example:

• Tôi mới ăn. = I just ate.
• Điện thoại này mới. = This phone is new.

So the meaning depends on where it appears and how it is used.

Yes, you often can.

Both những and các can mark plurality, but they are used a little differently.

• những sản phẩm này = these products / these particular products
• các sản phẩm này = these products, often sounding a bit broader or more formal depending on context

In many everyday situations, both are acceptable.
However, những often feels more natural when talking about a specific set of items in front of you.

In Vietnamese, adjectives used as the main description of the sentence often come after the subject.

So the structure here is:

• Những sản phẩm này = subject
• còn mới = predicate/descriptive part

This is normal Vietnamese sentence order.

Compare:

• Chiếc xe này đẹp. = This car is beautiful.
• Căn phòng đó rộng. = That room is spacious.

So English and Vietnamese differ here in structure, but the Vietnamese order is very natural.

Not exactly. Because of còn, the sentence specifically includes the idea of still.

So:

• Những sản phẩm này mới. = These products are new.
• Những sản phẩm này còn mới. = These products are still new.

The second sentence emphasizes that they remain in new condition.

No. Sản phẩm is the noun itself, meaning product.

Vietnamese often uses classifiers with countable nouns, but not always. In this sentence, no classifier is used.

You could sometimes hear a classifier in other contexts, depending on style and what exactly is being referred to, but những sản phẩm này is completely normal and natural.

A careful pronunciation guide is roughly:

• Những → sounds somewhat like nyuhng with a rising tone
• sản phẩm → sahn fuhm with the proper Vietnamese tones
• này → like nai with a rising tone
• còn → like cawn with a falling tone
• mới → like muh-ee with a rising-glottal tone

The hardest parts for many English speakers are:

• nh in những
• the tones
• the final consonants in phẩm
• distinguishing mới from similar-looking words without correct tone

If you want to sound natural, say it in smooth chunks:

• Những sản phẩm này / còn mới.

Yes, sometimes.

You could say:

• Sản phẩm này còn mới. = This product is still new.
• Sản phẩm này is singular because of này with one product.

But if you mean these products in the plural, you would normally want something like:

• Những sản phẩm này còn mới or
• Các sản phẩm này còn mới

In context, Vietnamese sometimes leaves plural unmarked, but using những here makes the meaning clear and natural.

A useful breakdown is:

• Những = plural marker
• sản phẩm = product(s)
• này = these
• còn = still
• mới = new

So the pattern is:

[plural marker] + [noun] + [demonstrative] + [adverb] + [adjective]

In more natural English-style grammar terms:

subject + descriptive predicate

This is a very common Vietnamese structure, and once you learn it, many similar sentences become easy to understand.