1. Collect evidence: Make sure you have enough evidence to support your complaint. This may include written records, photos, videos or other relevant documents.
2. Contact information: Find the contact information of Shandong Shuntong Petrochemical Company, such as official website, customer service phone number or email address.
3. Complaint: Use the contact information provided by Shandong Shuntong Petrochemical Company to complain to them. Make sure you clearly describe the problem and provide relevant evidence.
4. Follow up the complaint: follow up the progress of the complaint. If you don't receive any response, consider using other channels, such as social media or consumer protection organizations.
5. Ask for help: If your complaint cannot be satisfactorily resolved, you can ask for help from relevant institutions or departments. Such as local regulatory authorities, trade associations or consumer protection organizations.