You can get support on hardware and software design for your handheld equipments.
- Circuit design
- PCB layout, making prototype
- Develop firmware including GUI, Wifi, BLE, GPS, GPRS, etc
- Develop App. and PC tool if need
Just a brief introduction: I have worked in embedded system for over 12 years and lead a group of 6 members. Have corporate with universities and companies to extern support your project if need.
So just let discuss to understand more detail what you need and how can we make them