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 buildings ( id number, name text, city text, height number, stories number, status text )
TABLE: CREATE TABLE companies ( id number, name text, headquarters text, industry text, sales_billion number, profits_billion number, assets_billion number, market_value_billion text )
TABLE: CREATE TABLE office_locations ( building_id number, company_id number, move_in_year number )

### Question ###
Show the industries shared by companies whose headquarters are 'USA' and companies whose headquarters are 'China'.

### Accurate SQL ###

SELECT industry FROM companies WHERE headquarters = "USA" INTERSECT SELECT industry FROM companies WHERE headquarters = "China"