Mr. Zhang is deeply involved in the fields of customs, ecological environment and government affairs, focusing on providing legal services in the fields of customs and ecological environment. He has resolved administrative penalty disputes in customs and environmental protection for a number of domestic proposed listed companies and cleared obstacles to listing.

In the field of customs, Mr. Zhang is well versed in the rules and regulations of the relevant customs departments, familiar with international trade processes, and has unique experience in dealing with customs affairs compliance, import and export control, place of origin, commodity classification, valuation, tax dispute resolution, as well as administrative cases such as administrative penalties, administrative permits, administrative compulsions and other administrative and criminal cases. He has represented clients in relation to a number of administrative and criminal cases involving smuggling-type disputes and provided related legal services for import and export business.

In the field of ecology and environment, Mr. Zhang is well versed in the work content of relevant government departments and has accumulated rich practical experience in ecological and environmental administrative punishment, administrative compulsion, administrative license, ecological and environmental damage compensation and civil public interest litigation, civil tort, and environmental pollution crimes. He has handled multiple administrative reconsideration, administrative litigation, environmental public interest litigation cases involving environmental disputes.