Naphthalene Woyengedwa

Mankhwala Opangira Plasticizer Yokonzedwa ndi Naphthalene

Mankhwala opangira zinthu zopangira pulasitiki pamwamba pake omwe amagwira ntchito popanga utomoni woyengedwa wa naphthalene

kufufuza tsatanetsatane