Can I Use One More Join

it has already 2 inner joins can i use one more inner join within.

strSQL = "SELECT distinct z.location_id,z.location, y.company_id,y.company_name,w.category_id,w.catego ry FROM (appointment_detail AS x INNER JOIN location_table AS z ON x.location_id = z.location_id) INNER JOIN company AS y ON x.company_id=y.company_id ( INNER JOIN category AS w ON
x.category_id =w.category_id)WHERE x.expiry_date >=date() ORDER BY z.location ,y.company_name"

INNER JOIN category AS w ON
x.category_id =w.category_id