A na-eji ngwaahịa a ijikọ eriri nkesa na eriri na-abata, sistemụ netwọkụ, Catv eriri TV na ndị ọzọ. Ọ na - eji ọgwụ nje eme usoro injinụ, nke na - emegharị ya, na mgbochi corrosion, na - egbu egbu, mgbochi nkwupute na mgbochi mmiri na mgbochi. Nwere ike igbochi oke optic site na mmetụta nke gburugburu ebe obibi. Dome-ruo-Sound; Ejiri akara na usoro mgbanaka. Thisdị ụdị nke abụọ a ga-enweta maka ohere nke ngwa ngwa ọ bụla, na-enweghị nsogbu ndị ọzọ trays; Ọrụ ngwa ngwa na arụmọrụ nke ntụkwasị obi, dị mfe ngwugwu. Ngwaọrụ nchekwa nchekwa, enwere ike itinye ya na overhaa, ogwe osisi / mgbidi na-arị elu ma ọ bụ lie ya ozugbo.
1 2. 3. 4. Nkwụsị Flatten: 2000n / 100 mm (1min) 5. Ntuziaka mgbochi:> 2 * 104m 6. Ike ike: 15kv (dc) / 1min, enweghị arc karịa ma ọ bụ ndakpọ 7. Nrụgide n'ime ime ihe na-erughị 5 kPa mgbe a na-emechigharị na nkịtị okpomọkụ. 8. Oge afọ 25