products' qualification and productionproducts' quality as well as the production volumes.
Very nicely presented introduction! good writing! :)
the expansion of using genetic manipulation has
bringbrought the new outlook to the agricultural products.
has brought/ is brought/ was brought/ will bring
Nowadays, the appearance of several kinds of new crops has been acquainted with consumers.
....it's much nicer when you express this in direct speech.Nowadays, consumers have gained acquaintance with several varieties of new crops.
I am not against passive voice. But direct speech is more effective when convincing ideas due to its simplicity. So I favor direct more to passive, but good writing is always a good balance of both using them when and where they are more appropriate.