We are the top 1 stylus pen manufacture which include all the protocols, like : MPP, USI,HPP and pencil for iPad. here i would like to share more details about the USI stylus pen to you.High light:

1. 4096 high pressure level

2. Palm rejection.

3. 2hs per day can use 180days

4. one of the six USI protocol authorized supplier in the world.

5. support customized service.

Sample is available for test.

We also have stylus pen for Microsoft surface and pencil for iPad, if you have any interests, please do not hesitated to contact us.