Alexx, you may be absolutely correct about the rotors and even have special knowledge about Arashi products. It's just that, for me, I've never even heard of them and have literally decades of experience with the German, Italian and USA stuff. Maybe one issue is that there just isn't a body of history/experience on the 'off brands' or 'start up' brands. There's plenty of motorcycle industry information that I don't know about. Just to further clarify my own values on the subject....I'm 63 years old, have owned dozens of motorcycles, have frequented all the different types of racing for decades and ride track days whenever possible. So what I've seen on other high performance bikes, my own trial and error, I have simply formed opinions on certain aspects of motorcycling.
I'll say this one more time....I know this is a global economy and good stuff comes from all over the world. The internet is full of information about how the PRC cuts corners on their products to maximize profits and what big polluters they are. I'm not going to "try and prove it" by posting a bunch of links, someone above posted that they "did hours of research" and couldn't find anything, geeeze, in 5 minutes on Google I found volumes of information on metallurgy, quality control practices, profit motives...on and on.
If you are confident about a product, then use it and enjoy it.
Since I'm angry at the very wealthy corporations, insurance company CEOs, banks and Wall Street AND ***** politicians in my own country for selling off the middle class of my Country, I am very biased and conscious about where stuff I use is produced. I know most don't care but it's my thing.
Happy motorcycling, BTW, Portugal is one of the world's best kept secrets on beautiful locations! Raydog