I could not get much if any information about this tea. Based on the look of the leaves and the flavour, it appears to be a Formosa oolong.
This tea does not stand up well. It took far longer than it should have to actually steep to an acceptable strength level. Each successive steep got weaker and weaker, and far too fast for my liking. For the cost of this tea (something like $5 an ounce), this tea was not worth buying again.
EDIT: Fail for me, I must have been totally out of it when I wrote this review. It’s obviously not a Formosa oolong, but a Se Chung oolong from China.