... size :158*52*158cmGW:330 kg NW:290kgVolume1.3cbmKLLEN PIANO TECHNIQUE PARAMETERHammerUsing the finest quality hammer of FFW from ... structural mechanics,so assuring every mechanical capability in piano is jarless foreverKallen piano Technique Assurance Technique assurance of production 1, ... glue machine to gelatinize equably, we assure surface of piano bright and perfect. 4,Technique assurance of oil ...