we are a professional services company for the foreigners in China。We can change L visa or F visa to Z visa directly in Beijing, no need to leave the country. If you can not reach the requirement of China working visa, such as age, bachelor degree and 2 years working experience abroad, we can help you handle those problem. Normally, do the first step of Z visa, employment license, need 11 working days, but we can finish it as urgent case in 6 working days,5 working day, 4 working days and even 2 working days. If there any thing that I can help you, contact me.