@huyilin

Hi,

Many common responses in Chinese are not as specific as their counterparts in English. So for "Thank you for your input", you could just say "谢谢" or "非常感谢". If the input was very helpful, you could say "谢谢你帮忙". For "Thank you for your contribution", you could say "感谢你（您）的付出／贡献" which is only used in fairly formal contexts.

Hope this helps out ;)

- Grace