Engineering materials, aluminum doors and windows need to check it, I am a party unit?
General manufacturers can be out
If the tender list to the test fee can require the construction unit to send re-inspection, the general aluminum doors and windows rarely sent to the re-inspection, there are manufacturers of inspection reports and certificates can be followed by a supervisor is signed with the material acceptance report. General aluminum alloy doors and windows mainly look at the thickness of aluminum alloy, specifications, glass and so on up to the requirements.
