[Chen Pengyu's diary: 1276 articles] Board size: ultra-long * ultra-wide, honeycomb board is better than aluminum veneer flatness! [Chen Pengyu's diary: 1276 articles] board surface size: ultra-long * ultra-wide, honeycomb board is better than aluminum veneer flatness! [Chen Pengyu's diary: 1276 articles] board surface size: ultra-long * ultra-wide, honeycomb board is better than aluminum veneer flatness! [Chen Pengyu's diary: 1276 articles] board surface size: ultra-long * ultra-wide, honeycomb board is better than aluminum veneer flatness!