What can i do to supply myself with lubricant at your place

I would like to know which engine oil for my Hars 399 S tractor With Perkins turbo engine

I would like to start selling automotive spare parts to Kinshasa in the democratic repiublic of congo, parts for heavy duties commercial trucks such as mercedes benz, man, iveco... for small suvs and cars Toyota.. selling parts for Toyota, Mercedes Benz and Man (commercial trucks)

We are in the need of importing your product engine oil and ... but we don't have your contact.