Our GWA008 expansion screw is used to fixing the wpc joist,
laying a solid foundation. offering increased corrosion and crush resistance.
one square meter need 7-8 expansion screws.
we recommend when you starting fix the joists,
please make the ground hardening pretreatment and Surface leveling firstly
Address:Longquanwu Eco-Industrial ZoneMiaoxi, Huzhou, Zhejiang
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