DFW-12 series cable branch box is outdoor design, fully sealed structure, cabinet body protection class up to IP33. The cable joint bracket is made of stainless steel and the shell is made of high quality stainless steel plate. The interior of the box is divided into two parts: bus room and cable bin by cable silo roof plate.

The bus room is a sealed chamber made of 2mm steel plate. The cable connector bracket is located at the upper part of the bus room and is used to support the casing, which is used to secure the cable connection, with an interphase distance of 180mm. In the case of a lightning arrester type, the rear of the cable connector mounted by the arrester. In addition, short-circuit indicators and live displays are also installed in the bus room. All live parts of the bus room are subjected to strict silicone rubber outsourcing insulation. The cable bin is located under the bus room, is the passage of the cable in and out, and there are cable clamps and grounding terminals in the cable bin.

The power technology enterprise was established in November 2009. It is a company specializing in the research and development, production, sales, and technical services of power products such as three-dimensional coil core transformers, amorphous alloy core transformers, amorphous three-dimensional coil core transformers, photovoltaic substations, energy storage equipment, high and low voltage switchgear, European, American, Chinese outdoor box substations, intelligent substations, etc. A production service oriented enterprise integrating construction EPC. The products are widely used in fields such as State Grid, Southern Power Grid, railways, mines, infrastructure, metallurgy, roads and bridges, and real estate management system.

The company has passed ISO9001:2015 quality management system certification, ISO14001:2015 environmental management system certification, ISO45001:2008 occupational health and safety management system certification, PCCC energy-saving product certification, national mandatory product "CCC" certification, CQC China quality certification, AAA credit rating certification, etc. The company has been rated as a national high-tech enterprise, a provincial "specialized. special and new" small and medium-sized enterprise, one of the top 100 scientific and technological enterprises with the most growth potential in the province, a provincial small and medium-sized scientific and technological enterprise, and a green factory. The company has provincial high-tech enterprise research and development center academician workstation, doctor innovation workstation, 3 invention patents and 51 utility model patents.

The company's products have been recorded in the promotion catalog of the "Energy Saving and People Benefiting Project" and the "Recommended Catalog of Energy Saving Electromechanical Equipment" of the Ministry of Industry and Information Technology, the Ministry of Finance and the National Development and Reform Commission. It is the first power industry enterprise to receive direct subsidies from the Ministry of Finance for product sales. The company's products have won honorary titles such as the national industrial energy saving technical equipment products, the first set of products in key fields of provincial equipment manufacturing, and the provincial excellent new industrial products. The production standards of the main products "SCB13-RL solid triangle ironcore dry-type transformer" and "SBH16-RL solid triangle rolled iron core amorphous transformer" are listed as manufacturing quality standards. The company led the drafting of 10 standards, including "GB/T32825-2016 National Standard for Three phase Dry type Three dimensional Wound Core Distribution Transformer", "NB/T 10483-2020 Standard for Three phase Dry type Amorphous Alloy Three dimensional Wound Core Distribution Transformer" and "T/CEElA 251-2016 Standard for Composite Transformers for Photovoltaic Power Generation", making positive contributions to energy conservation and emission reduction in the power industry and the development of green energy technology.