HDPE and PVC pipes and fittings

we are importers of plastic industry raw materials pipes and fittings based in ethiopia. currently, we are looking fora partner who can supply pipe and fittings in bulk. as a result we are writing this email to demonstrate our sincere interest to cooperate and handle the orders we have at hand.
the products are
1. hdpe and pvc pipes and fittings
2. aluminum pipes and fittings (top urgent)
in order to achieve this we require the following
we expect,
1. details specification of the pipes