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 Qingdao Jolong Metal Products Co., Ltd. is a specialized company that offers the designing, manufacturing and installing of doors and windows made of reinforced plastic, aluminum alloy, of screen windows, and of series of products made of colored covering templates. It has won the recognition of ISO 9001:2000, and obtained a number of technical qualifications issued by national administrative agencies. Its registered trademark is ?¡ãJOLONG?¡À Doors and Windows. |
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