青云翻译

To ensure the strength and airtight performance, protective door closed doors to take the overall embedded precast way. Sealed using corrosion-resistant hose door closed

To ensure the strength and airtightness and protective sealed door frames pre-made embedded as a whole. Doorframe confined with corrosion-resistant rubber tube sealed

In order to guarantee the intensity and the airtight performance, the protection airtight gate adopts the way which the doorframe pre-workpiece whole buries in advance.The doorframe uses the anticorrosive rubber tube seal airtight

To ensure that strength and confined performance, protective confined door frames taken overall pre-buried way precast. Corrosion resistant plastic tube doorframe confined used sealed

To ensure the strength and airtightness and protective sealed door frames pre-made embedded as a whole. Doorframe confined with corrosion-resistant rubber tube sealed