N-818 (excluding door and window accessories) N-818 (including door and window accessories) Surface spring top and down clamp clamp clamp clamp up and down
Surface spring can be adjustable or not:
Adjustable
Surface Spring Speed Adjustment interval:
Two paragraphs
Type of surface spring cylinder:
Single cylinder
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Items weight estimation 0 g, subject to actual weight
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to 50% discounts!
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