Purchased the frame thru’ ” Cycangelina ” at Dhgate. Don’t order anything thru this agent. Nothing on the frame was checked before shipment – I think this is the difference between Aliexpress , and it’s competitors …especially as AE is on the American Stock Exchange , and owned by the richest man in China …
“FD Grip” The No.1 earthquake-resistant rebar coupler in Japan, the highest seismic country, for over 30 years.
https://www.fujibolt.com