Adobe After Effects/3D Particle animation video intro

A animation for the introduction at the start of products videos. Between 5-7 seconds long that will feature a stream of particles entering the screen and then spiralling around inside and object before fading away and the company name and logo being shown. Needs to be very high class, may possibly require use of a 3D package but may only require After Effects. Can provide all artwork and 3D models required as well as highly detailed design brief and instruction. All source files will be required on project completion. Follow up work highly likely from this contract. Must be a UK or US resident to tender for this contract.