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When representing cable trays on drawings, specific codes are usually used to identify different types of cable trays.

Cable trays with solid covers should be used in specific environments such as those that require shielding of external electrical interference, flammable dust locations, high temperatures or splashing

Cable trays usually have fire protection requirements, especially fire-resistant cable trays. These trays use non-combustible materials or add fire-resistant coatings on the basis of ordinary material

Cable trough box is mainly used to arrange cables on walls, floors or ceilings, hide and protect cables, and provide easily accessible cable paths. It is suitable for arranging cables along a specific