The LingHang theme does not have product functionality built into the theme code. Instead, it utilizes a B2B product management and display plugin. This way, your product data won't be affected if you change themes later.
To add product functionality like this demo site to your website, follow these steps:
1. WordPress Admin Dashboard → Plugins → Add New Plugin
2. Search for „naibabiji“, install the B2B Product Display plugin that appears, and activate it.

3. WordPress Admin Dashboard → Product Management → Product Categories, first add product categories.

4. Add a new product. Fill in the product title, short description, detailed description, category, product image, and then publish it.

How to Set Up Product Pages and Menus?
Under the backend menu settings, there is a product display settings page. Here you can set the button color and the default inquiry button link.
The default product listing page URL for the plugin is yourdomain.com/products

Therefore, there's no need to create a separate product summary page; the plugin creates it automatically.

To add a menu, simply go to the backend, Appearance → Menus, select Custom Link, and add the URL.
To display products, use the shortcode method, as shown in the example below:

AeroDyne Pro Series Industrial Fan
This is a product feature demonstration, not an actual product sold on this site...