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Shengzhong Bangladesh Building Material Import & Export Co. Ltd.
Name：Production and processing of door and window assembly
(1) Appearance inspection: the surface of the door and window should be bright and clean, no bubbles and cracks, uniform color, smooth welding, no obvious defects, impurities, and so on.
(2)Inspection of appearance size: strictly control the quality of doors and windows within the allowable deviation of national industry standards;
(3)The sealing strip should be assembled evenly, the interface is tight, and there is no grooves.
(4)The assembly of the bar should be firm, the clearance of the joint at the corner of the corner should not be more than 1mm, and no two or more strips should be used on the same side.
(5)The installation position of hardware fittings is correct, the number is complete, and the installation is firm.
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