"Balcony guardrail is the main component of the balcony and the safety facility on the free side of the balcony platform. Railings are generally composed of balusters, balusters, connecting rods or handrails, which can be divided into hollow railings, solid balusters, and a combination of the two. The current balcony guardrails are made of various materials, including wood guardrails, stone guardrails, iron guardrails, stainless steel guardrails, aluminum alloy guardrails, etc