Langfang Woda Metal Material Co., LTD. Main hollow aluminum insulation, hollow aluminum corner code, butyl rubber strip, the existing hollow aluminum insulation spot a variety of specifications, from 4A to 27A hollow aluminum insulation have enough inventory. Now in the market most of the hollow glass doors and Windows aluminum crosser, doors and Windows are the demand of the market is more and more big, the competition is becoming more and more fierce, most manufacturers have begun to cut corners, a lot of thickness is not up to standard of production, quality inspection does not pass the hollow aluminum crosser, trying to others, with prices hitting the market, make each big cost gap between Windows and doors factory. Our company has been strictly controlling the production quality inspection link of hollow aluminum partition, hoping to use the best quality and service back to each big door and window factory using hollow aluminum partition, thank you for your support for many years.