1. Find the contact information of official website: Generally speaking, official website will provide the contact information of customer service. You can find the phone number, email address or other contact information of customer service through the "Contact Us" or "Customer Service Support" page of the website.

2. Looking on social media platforms: Many companies will set up accounts on social media platforms and provide customer service support. You can search the company name or trademark, find its account number on social media platforms, and send messages or private messages to ask for customer service contact information.

3. Search the company's customer service hotline online: You can enter the company name and customer service hotline in the search engine to try to find the contact information of customer service.