... Hilong Machinery Co.,Ltd is a professional and one of the biggest manufacturer for formwork and scaffolding accessory in china. We have ... we have more than ten years production experience on formwork and scaffolding accessory including Wing nut, Formwork clamp, Tie rod, ... , Prop sleeve, Base jack nut, Scaffold coupler, Ledger end, Brace end, Waller plate and so on. Steel and assembly formwork climbing ...