... durable and safetyand cheap Dia:6mm-30mm Heavy duty industry grade 80 alloy chain Introduction: Tianjin eastern union group with more ... manufacture and export chain block, lever block, electric hoist, lifting chains, chain sling, webbing sling, cargo lashing and other ... ‘s need we can provid galvanized, dacromet, metal coating, black coating, oil coating and other various surface treatments on the ...