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Product Details
产品Price Negotiable
最小起订Quantity：1 Piece 供货总Quantity： 999 Piece
Hand-cranked multi-control window opening system offers cost-effectiveness and practicality. Can be used individually or in combination with multiple articulated arm linkage mechanisms to control multiple windows; elegant design The hand-cranked window opener features a unique mechanical principle; it can be easily operated. Multi-control opening systems are suitable for factories; large auditoriums; warehouses, etc. for opening and closing
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