• Repair and Maintain & Update 维修、维护和更换 Keyboard repair（Operation video）
• Key-Board and Touch-weight Debug 键盘和触摸重量调试 Keyboard touch adjustment（Operation video）
• Clean soundboard and wires 清洁音板和钢丝 Cleaning Rust and Tuning（Operation video）
• Pedal Maintain 踏板维修 Pedal repair (Operation video）
• Strike distance adjustment 击弦距离调整 六月船歌测试 test （Operation video)
• Pitch, touch, tone assessment and adjustment 音高、触摸、音调评估和调整 Cello custom pitch 441 Hz（Operation video）
• fully service (Preparing、Repair、Tuning、Regulation、Voicing、Purchase、Evaluation ) 全方位服务（准备、维修、调音、调节、整音、选购、评估）STEINWAY & SONS Maintenance and Tuning（Operation video）
• Voicing （Hammer soft acupuncture）整音榔头柔软和针刺(操作视频）

Play test repertoire：F. Chopin : Nocturne op. 9 no. 1 in B flat minor 

This 1929 Steinway (M) piano, after more than three hours of voicing and tuning, feels that the tone has become softer and more ethereal. Especially, the adjustment of the touch is suitable for playing Chopin’s works… Improvising Chopin’s works to soothe the soul that has been appreciating and practicing Chopin for many years!

“The theory of relativity occurred to me by intuition, and music is the driving force behind this intuition. My parents had me study the violin from the time I was six. My new discovery is the result of musical perception.” — Albert Einstein