That specific link didn't work for me.
I have read on the PZ III metal tank page the below Mato comment, if this is what you are referring to ...
"
We will slowly move to the Metal Tank market, and are currently taking suggestions on what tank to create next! Ideas? Thoughts? Suggestions? Please contact us. We are service of you anytime."
Mato has had a couple all metal Heng Long tank offerings in the market for a while, the PZ III & Tiger I, so that isn't really big news in of itself. Remember, this is Mato, so even if they decided to move strictly to metal tanks, it wouldn't affect Heng Long's decision to keep selling their plastic tanks. Besides, I really don't read into that above statement that they are switching from plastic to metal tanks, just that they will continue to add more metal tank offerings of the same popular plastic tank models they already sell, but at a slow pace & according to customer demands.
~ Craig ~