Is the Yingkou District Adjustment Committee responsible for collection?

No.

According to relevant information on Baidu Encyclopedia, the Yingkou District Mediation Committee accepts the pre-case mediation and post-case mediation commissioned by the People’s Court of the West District of Yingkou City, Liaoning Province in accordance with the law, and accepts the mediation commission of the West District People’s Court of Yingkou City, Liaoning Province. The supervision and business guidance unit of the People's Court is not the collection unit.

Collection refers to a method of recovering overdue non-performing assets. Usually the creditor itself or entrusts a third party to collect the debt.