we have a recode in China Custom System. 
we have submit a list about clay bar (ram material, produce process, and quality checking, also must all test report.) than China Custom System will give us a recode for the clay prodcuts. 
why we need a recode in our custom system? 
it is helpful for customs cleance in export programes. 

iplease let us know if you have any question in the export process. thanks 

here a sample for you reference: