I will split your question in two, and answer accordingly.
1) To me where it reads "However, this is just can be called the success in manufacture and exportation of garment.''
Should read "However, this is just WHAT can be called the success in manufacture and exportation of garment." let´s not forget this was an essay, made possibly by Chinese undergraduates, perhaps in haste.
2)Your question looks like too general, not specific, you didn´t let to know if it was about the boldened part, the first sentence or other part of the paragraph, nor if it was the paragraph itself.
So, corollary from 2:
2a) It seems like that China have owned a great success in its textile and apparel industry
Yeah, present perfect (in Italics and boldened part) it means that China have been succesful at a point in the past and that it (the action of being succesful) extends to the present.
2b) Just to illustrate the point, let´s check the sentence "However, this is just can be called the success in manufacture and exportation of garment."
This is the opinion of the author (as of now, in his essay), so to express facts
, habits, opinions
, we use the present tense, it´s a case in wich the author means your opinion.
I can see how this puzzled you, it´s because the author mixed the tenses, but this happens. It´s because the author state a fact, something that have been happening (or "it seems", in his own words), then he offer his opinion (something that is happening right now.)
So, the sentences have to be analyzed in a case by case basis.
I hope this helps you a bit.http://grammar.ccc.commnet.edu/grammar/ ... resent.htmhttp://grammar.ccc.commnet.edu/grammar/ ... tm#perfect