Compliant with standards: Compliant with GB/T18380.31-2008, IEC60332-3-10-2018 "Combustion tests for cables and optical cables under flame conditions - Part 31: Vertical spread test report for vertically installed bundled wires and cables - Test apparatus", able to meet GB/T18380.32-2008/IEC60332-3-21:2000 "Combustion tests for cables and optical cables under flame conditions - Part 32: Vertical spread test for vertically installed bundled wires and cables - Class A F/R" GB/T18380.33-2008/IEC60332-3-22: 2000 "Burning test of cables and optical cables under flame conditions - Part 33: Vertical spread test of flame for vertically installed bundled wires and cables - Class A" GB/T18380.35-2008/IEC60332-3-24: 2000 "Burning tests for cables and optical cables under flame conditions - Part 35: Vertical flame propagation test for vertically installed bundled wires and cables - Class C" GB/T18380.36-2008/IEC60332-3-25: 2000 "Burning tests for cables and optical cables under flame conditions - Part 36: Flame spread test for vertically installed bundled wires and cables - Class D.

Ignition Source: 1. Type: The ignition source should include one or two belt type propane gas burners and their matching flow meters and Venturi mixers. The fire supply surface should be a flat metal plate with 242 drilled holes, arranged in three rows in a staggered manner, with 81, 80, and 81 holes in each row, distributed within a nominal size range of 257 × 4.5mm. In addition, a row of small holes are opened on both sides of the flame thrower, which can maintain stable combustion of the flame. Each blowtorch should be equipped with an accurate device to control the flow rate of propane and air. Rotary flowmeter or mass flowmeter can be used. 2. The ignition source position of the spray lamp should be placed horizontally, at a distance from the front surface of the cable sample, at the bottom of the test box, and symmetrically with the axis of the steel ladder. The ignition point of the blowtorch should be located at the center between the two horizontal bars of the steel ladder and at a distance from the lower end of the specimen.

Smoke and dust removal tower: mainly used for experimental processes to produce smoke that meets environmental requirements after being treated by the smoke and dust removal tower. Material: The entire body of the washing tower is made of PP material, and there are no metal components in the system, which has extremely high acid and alkali resistance and corrosion resistance; Circulating liquid layer: It can be filled with tap water or washing solution, and the washing solution has a better effect. In order to prevent the waste discharged from corroding the bottom of the washing tower; Air layer: The exhaust gas emitted during production or experimental processes that needs to be treated, connected to the air layer and inlet for waste to enter the air layer; Filling layer: The filling material of the washing tower adopts sea urchin shaped mesoporous balls made of PP material, with a multi toothed TELLERTT shape. The surface of the filling layer has a window for easy cleaning of the balls inside the filling layer. The main function of the filling layer is to disperse the exhaust gas in the air layer into dispersed waste, so that the exhaust gas can be fully cleaned in the spray layer; Spray layer: The sprinkler head in the spray layer adopts a 120 degree rotating unobstructed nozzle, covering an area. The spray layer has an independent window for checking the working condition of the sprinkler head; Anti fog layer: It can effectively filter impurities in the air and prevent water mist crystals in the exhaust gas from corroding the inner wall of the washing tower; Circulating pump: The circulating pump circulates the liquid in the circulating liquid layer through the sprinkler head, saving water.

Selection of Packaging Materials: Selection of Packaging Materials

1. Use sturdy and durable packaging boxes to prevent equipment damage caused by collision or compression during transportation.

2. The interior is filled with shockproof materials, such as foam, air cushion or pearl cotton, to ensure that the equipment will not shake in the packaging box. 3. For fragile or sensitive
components (such as electrodes, display screens, etc.), package and secure them separately to avoid damage during transportation.
Mode of Transport: 1. Prioritize choosing professional logistics and transportation companies to ensure safety and reliability during transportation.

2. For long-distance transportation, land or sea transportation should be used to avoid the potential
impact of air pressure changes on equipment during air transportation.