Below is the list of tables from the database along with their columns and datatype. Need to generate an accurate SQL query for the question.
Only use the columns present in the respective table. Only use the columns which are required to generate the SQL query. Only use table joins if required and not otherwise.

### Tables ###
TABLE: CREATE TABLE products_for_hire ( product_type_code VARCHAR )

### Question ###
How many different product types are there?

### Accurate SQL ###

SELECT COUNT(DISTINCT product_type_code) FROM products_for_hire