Dear Sir/Madam,
I am submitting an application for the translation job you posted on Freelancer.com.
I have spent many years writing and speaking in Mandarin and recently, I have passed my Chinese Language Proficiency Level 6 (HSK) qualification exam.
I also have good command of the English language.
I personally value integrity and professionalism in work, and I believe that I could live up to your expectations and complete this job on time satisfyingly.
Please do not hesitate to contact to discuss further details about the job.
I look forward to hearing from you.
Best regards,
Haniko