Material Zinc steel Item No. Category Guardrail

Scope of application guardrail fence brand other specifications: rectangular opening 32 square, rectangular opening 40 square, rectangular opening 42 square, rectangular opening 50 square, rectangular opening 20*30, rectangular opening 20*40, rectangular opening 30* 50, rectangular opening 40*60, square opening 40 square, square opening 42 square, square opening 50 square

Is it a source of exclusive supply for cross-border export?