In the Import/Export > Product Specifications, Catalog allows importing decimal values in Number-type product specifications, but this field type supports only integers.

This causes a blank/empty field in the specification of the product page.

Simulation

1. Import a specification with a decimal value for a product.
2. After importing, go to the product form page that imported the specification.
3. Scroll down the form to the specification imported.
4. The specification field is displayed as blank/empty.

Workaround

Update/import the specification for a product with an integer value.