For applicants age 14 to 70, the first time applying for a Chinese visa since 1st Dec 2017, you must submit both the visa application and fingerprint at the center in person at the same time. But you can also contact a travel agency to help you with filling out the online application form, submittal of application documents and booking of appointment for fingerprint submittal. For more information, please contact a travel agency/ the Visa Center.
If you have applied for Chinese visas with the same passports and have had fingerprints collected and visa approved within 5 years, you may submit the visa application either in person or by a travel agency. But please make sure you are in Romania during the visa application.