Tahap priksaan pra-sale:ngerti kabutuhan pelanggan, spesifikasi produk, kutipan tepat waktu Ing adol:supaya pelanggan ngerti kemajuan pesenan ing wektu, njamin kualitas lan wektu pangiriman Sawise adol:pas wektune ngrampungake masalah panggunaan sing dialami pelanggan, kayata masalah mutu, ganti wektu sing tepat
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