wordpress无法导入xml文件

I am trying to import wordpress site that my client sent to my localhost wordpress. I am getting this error

product “product years 2010-2018” already exists. Failed to import productyear 2010 Failed to import productyear 2011 Failed to import productyear 2012 Failed to import productyear 2013 Failed to import productyear 2014 Failed to import productyear 2015 Failed to import productyear 2016 Failed to import productyear 2017 Failed to import product_shipping_class CAR USPS Priority Mail 2-3 days Failed to import product_type simple Failed to import product_cat simple Failed to import product_cat TAURUS product “product years 2007-2013” already exists.

1st thing what i did was to go through tools->import->wordpress importer and then select the xml file .The main products was also not importing.

2nd thing after i roam the internet i found out that posttype need to be created in the theme so i registered all the posttypes i found out to be missing. the products was imported but not the product year and after records

3rd thing i did was to download 7zip and then open the xml file with 7zip. change it to gzip and then went to import again by selecting the newly created file. it give the result above

can some please specify how i can import the remaining data other then product? i am new to wordpress.

The xml file has this point
7)WordPress will then import each of the posts, pages, comments, categories, etc. -->

Why i need to create posttypes