Seimwe yemapurasitiki einjiniya, zvigadzirwa zvenaironi "zvinotsiva simbi nemapurasitiki, nekuita kwakanaka kwazvo", zvinoshandiswa zvakanyanya.Nekuda kwehuremu hwayo huremu, simba rakawanda, kuzvizora, kusapfeka, anti-corrosion, insulation uye zvimwe zvakawanda zvakasiyana zvivakwa, inoshandiswa zvakanyanya ...
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