Thanks to the thread starter for sharing pics and info. Very glad that you are happy with it. Would be interesting to try one out in the future, if only it were nearer home. It is definitely an option to be explored, especially for those of us who don't want the headache and/or cost of importing a cab.
Build? Materials? Anyone can speculate. And speculation is all it will be, and nobody is right or wrong (just opinionated) until it is a/b'd side by side with your choice of other cabs, using the same two speakers and the same amp.
Until that happens, out of respect to the TS, guys, keep your put-downs, jabs, and snide remarks to yourselves. Sayang ang info if this ends into a pissing contest again and the thread gets locked through no fault of the TS's intentions.
IMO, the proper way of comparing cabs (and other gear, for that matter) is to first categorize them by their price ranges, and match up only those that belong within the same bracket. Otherwise, comparing two amps with wildly differing cost of materials and labor components is not really fair.