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Rösler pianos are designed in PETROF’s development workshop in Hradec Králové and produced under licence in China Hailun Piano co., ltd. in conformity with the technical documentation of PETROF’s Technology Department under the technical supervision of its employees.
 
The RS series upright pianos have iron plates that are cast using a higher process.
 
Thanks to the control of the casting process, the RS series upright pianos have the design of PETROF's classic honeycomb iron plates, which are more beautiful.
 
The RS series upright pianos have smooth and beautiful design curves.
 
The RS series upright pianos have these main technologies:
Positioning hole process guarantees assembly accuracy; Automatic friction string machine for improved pitch stability; German imported RöSLAU special strings; Aluminum alloy solid wood multi-layer board adjusting device; European plug-in mute system; AAA spruce wood soundboard; Solid wood solid back frame structure; European traditional solid wood pedal linkage system; Bass strings pillow button design; Solid wood keyboard; Key cover descender

1. The Rosler RS126C piano was developed at the research and development center of PETROF in the Czech Republic.And referencing the supervision of PETROF's technical staff, according to the technical documentation of PETROF company's R&D department,PETROF authorizes China Hailun Piano Co., Ltd. Produces Rosler Pianos.
 
2. Rosler piano is not only in line with the piano industry requirements, but also protects the product quality and stability by applying CNC five - axis machining bending.
 
3. The drilling work on the RS126C piano iron plate, the milling of the string reinforcement and the connection between the components of the sound source are completed by the high-tech CNC control equipment. It controls the manufacturing accuracy and controls the quality of the piano.
 
4. Rosler's piano makes the assembly precision to meet industry standard requirements through the temperature control and humidity of the wood and workshops,the unique positioning patented technology and the CNC processing technology from Japan.
 
5. The piano keyboard of RS126C is HAINSWORTH felt from the UK, which has good weather ability, so that the piano can be stable in different environments.
 
6. The soundboard of RS126C is spruce wood sound board. The hammers of RS126C are made from the ANBIC hammer felt from Japan, to make it soft. The ROSLAU high strings from Germany can ensure the soft tone and the good overtone of the strings while playing.
 
7. The maple hammer handle and alder hammer wood core of RS126C can ensure the soft tone and the good overtone of the strings while playing.
 
8. The ribs and other wood parts of RS126C are selected from various woods from northeast China. Solid wood string code is conducive to transmission of sound.
 
9. The tuning peg of RS126C uses chamfer threading technology so that the tone is smoothly without noise.
 
10. The string axis of RS126C is made of 18 layers of maple. And it is stable and firm.
 
11. Automatic friction of the string machine weakens the string stress, and ensures a longer and more stable tone.
 
12. Rosler RS126C piano flaps system follow the traditional European design and use the wooden lever transmission structure.
 
13. Rosler RS126C piano keyboard is made of European spruce wood.