Need Translator / Interpreter for meetings in China (Mandarin / English)

I am a Canadian Product Engineer visiting suppliers in China. I require an interpreter to travel with me to China for three to four days from Hong Kong (transport starting in HK, room, and board will be provided). Translation will be from Mandarin or Cantonese to English, primarily through verbal discussions. Technical Requirements: The applicant must be able to understand and translate terminology relating to plastics, moulding, and computer-aided design vocabulary in real-time from Chinese to English. The applicant may also be requested to translate some written documentation that is presented at the meetings (chart, brochures, price lists). Full translation of legal documentation will not be required, but basic translation of contract contents may be requested. Travel Requirements: Must be able to travel to China from Hong Kong (Administration costs, such as VISA, Passport, etc. will not provided) Professional Expectation: The applicant is expected to behave in a professional polite manner towards myself and the clients during meetings. There is no specific dress code, however business casual is preferred. The working hours are expected to last 8-9 hours/day, however, due to the nature of client meetings, there is the chance the working hours will be extended (pay will be minimum of 8 hours/day).