Learn Turkish: Ürün kaliteli olunca işçiler hemen paketliyor. - When the product is high quality, the workers package it immediately.

The suffix -ınca (which adapts to -ince, -unca, or -ünce based on vowel harmony) attaches to a verb stem to mean "when" or "as soon as". Here, it is added to the verb root ol- (to be / to become). Therefore, olunca means "when it is" or "when it becomes".

Why is the word for "high quality" kaliteli instead of just kalite?

Kalite is a noun that simply means "quality". By adding the suffix -li (meaning "with" or "having"), it becomes the adjective kaliteli, which literally means "with quality" or "high quality" to describe the ürün (product).

The English translation says "package it". Where is the word for "it" in the Turkish sentence?

It is left out entirely! Turkish frequently drops object pronouns like "it" (onu) when the context makes it completely obvious what is receiving the action. Because we just mentioned the ürün, there is no need to repeat it.

Why does paketliyor use the -yor (present continuous) ending if the English translation uses the simple present ("package")?

In Turkish, the present continuous tense (-yor) is very often used for general, habitual actions, or things that are generally true as a rule. While English prefers the simple present ("they package it"), Turkish speakers frequently use -yor to show what generally happens in a given situation.