New website project

I've a new website project I want to source out to an established company or very talented individual. I am looking for another company to partner with, so perhaps an opportunity to show me what your company is capable of for more projects? This project is not a difficult one, however I expect HIGH standards of UI / coding and a UI that converts, your work will be checked for quality and I will expect this project to be done on time and on budget. The site will be for a new mobile app development company, therefore UI needs to be of high calibre, if you don't have a strong portfolio do not apply, I may also seek references. The following applies - Communication / planning / execution and completion are important - English needs to be of good standard - Only companies or talented individuals with a proven track record and at least 5 freelancer feedbacks - Technical documentation will need to be completed and scope mapped out before commencing work on this project - MAXIMUM Budget is less than $500 USD - NO UPFRONT PAYMENTS - payment on signoff - Mockups to be done until the UI is right - Companies experienced in designing strong converting sites will be given preference - Companies based in China will be given preference The site will consist of the following; - Home page - Services area - iphone dev - ipad dev - android dev - BB dev - Portfolio page (AJAX display for the mobile app portfolio) - Company info - News - Contact page The site should be developed in PHP/MySQL, I'm not keen on using a Open Source CMS, however will consider using a Custom CMS your company may have pre-developed...... A new company logo will need to be designed to