MYSQL SELECT Query

I have two tables products and similar_products. Products tables holds data related to available products however this tables has loads of products that are same but with different product id. Which is why I have another table that hold the data for all the similar products. I need to run a query that selects products from products table but at the same also check in similar_products tables to not select any duplicate products.

So for example:

Products Table:

ProductID--------------- Manufacturer----------------Part No----------------------------Name

8202-----------------------Hp-----------------------------402146-B21----------------------HP Auto Synch Cable

8210-----------------------Hp-----------------------------113894-B21----------------------HP Stylus 3 Pack

8211-----------------------Hp-----------------------------113894-B21----------------------HP Stylus 3 Pack

8212-----------------------Hp-----------------------------113894-B21----------------------HP Stylus 3 Pack

Similar_products Table

ProductID----------------Similar_ProductID

8210-----------------------8211

8210-----------------------8212

8211-----------------------8210

8211-----------------------8212

8212-----------------------8210

8212------------------------8211

How can I run a query that will only select ProductID 8202 and 8210 and not select duplicates products.