Compact Plastic Transformable Structure Design

I am seeking a skilled product designer or firm that can create a unique piece of furniture structure for me that should have some feasible mechanism inside. My vision incorporates dual functionality - a system that doubles as a table when in use and can be easily folded into a chair when not required.

Key Requirements:
- Material: The primary material should be specific plastic, ensuring durability and longevity. You will need to specify plastic for my requirement. The selected freelancer will need to consult with me further regarding your specific type of plastic.
- Size: The furniture should be small and compact for convenient use in limited spaces yet comfortable enough when serving both its functions.
- Feature: The most important feature I am looking for in this system is durability and foldability. I NEED TO USE SPECIFIC MECHANISM IN THIS PROJECT. So tell me during your offer which mechanism you will use.

Ideal Skills and Experience:
- Experienced in designing and creating structural products, especially with plastic materials.
- A strong understanding of how to optimize small/medium spaces without compromising comfort and functionality.

I will accept your offer if you feel confident that you meet these requirements and can deliver a product that fulfills my vision.