Views: 0 Author: Site Editor Publish Time: 2026-07-09 Origin: Site
Danyang Bosheng Alloys Material Factory Co., Ltd. has long been dedicated to the field of high-end precision magnesium alloy die casting. The company specializes in the R&D and mass production of lightweight structural components for drones and intelligent equipment, and serves as a core-certified professional strategic supplier of high-precision magnesium alloy die-cast components for DJI.
Focusing on core load-bearing structural components for drones, the company mainly provides two key supporting products: AZ91D high-end magnesium alloy drone brackets and lightweight fuselage structural components. Relying on its independently improved semi-solid magnesium alloy die-casting process, the company has overcome industry bottlenecks in high precision, lightweight design, and production stability, creating high-quality structural components suitable for high-end consumer-grade and industrial-grade drones.
With micron-level machining precision, outstanding lightweight performance, a full-process anti-corrosion and weather-resistance treatment system, and stable large-scale production capability, our products fully meet the demanding flight conditions and quality standards of DJI’s full range of drones. They can reduce the drone fuselage weight by more than 20%, significantly improving endurance, payload capacity, and flight stability.
At present, the company has established an annual production capacity at the level of tens of millions of pieces. A single mold set can achieve a daily output of up to 3,000 pieces, with a stable mold life of more than 150,000 shots. With its core advantages in high precision, high yield rate, and efficient delivery, the company has become a major core supplier of lightweight structural components for DJI drones. It helps DJI achieve product performance upgrades as well as localized, high-end, and efficient supply chain development, setting a benchmark for domestic high-end magnesium alloy die-cast component supply in the drone industry.
With the rapid development of the global drone industry, applications such as consumer aerial photography, agricultural plant protection, inspection, surveying and mapping, security, and logistics continue to expand. As a result, performance requirements for drone equipment are constantly increasing. Lightweight design, high precision, high stability, long endurance, and strong weather resistance have become the core development directions for high-end drones.
Drone body brackets and load-bearing structural components are key force-bearing parts that directly determine the overall weight, flight attitude stability, endurance, and service life of the aircraft. Therefore, material performance, forming precision, and structural strength are critical. Relevant industry data shows that every 10% reduction in drone body weight can increase endurance by 8% to 12%. Lightweight upgrading has become a key breakthrough point for improving the competitiveness of drone products.
As a core lightweight material, magnesium alloy has a density of only one-quarter that of steel and two-thirds that of aluminum alloy. It also offers high specific strength, high thermal conductivity, and excellent electromagnetic shielding performance. Under the premise of ensuring structural strength, magnesium alloy can achieve exceptional weight reduction, making it one of the optimal material choices for high-end drone structural components.
At present, the field of high-end magnesium alloy structural components for drones faces multiple technical and mass-production challenges, which restrict product iteration and upgrading for leading brands. Magnesium alloy structural components produced by traditional solid-state die-casting processes commonly suffer from low forming precision, uneven wall thickness, internal porosity, shrinkage, and high residual stress. Local machining tolerances are often difficult to improve beyond 0.05 mm, making it hard to meet DJI’s strict requirements for precision assembly and highly stable flight.
At the same time, traditional processes offer limited weight reduction, making them unable to meet the trend toward extreme lightweight design in next-generation drones. In addition, many small and medium-sized manufacturers in the industry lack complete post-treatment systems and are unable to perform standardized electroplating and salt spray weather-resistance testing. Their products often have insufficient corrosion resistance and aging resistance, making them unsuitable for complex outdoor operating conditions.
In terms of capacity and mold stability, ordinary die-casting molds generally have a service life of less than 100,000 shots. During mass production, they are prone to precision deviation and yield fluctuations, making it difficult to support stable procurement demand at the level of tens of millions of pieces from leading drone companies. For a long time, the core production capacity and high-quality processes for high-end, high-precision magnesium alloy die-cast drone components were mainly concentrated among overseas manufacturers. This resulted in high procurement costs, long delivery cycles, slow response to customized iterations, and delayed after-sales support, severely restricting DJI’s cost reduction, efficiency improvement, and rapid market expansion.
Against this industrial background, DJI urgently needed a high-quality local supplier with core process technology, ultra-high machining precision, full-process quality control, and stable large-scale mass production capability. Such a supplier would help solve pain points such as insufficient precision, limited lightweight performance, poor weather resistance, and unstable capacity for high-end magnesium alloy structural components, thereby enabling localized high-quality support and supply chain optimization for core lightweight parts.
With years of experience in the precision magnesium alloy die-casting sector, our independently developed semi-solid magnesium alloy die-casting process, industry-leading micron-level machining technology, and comprehensive electroplating and salt spray testing system, our company successfully passed DJI’s rigorous supplier qualification review, product precision testing, simulated operating condition testing, and on-site audit. We were successfully included in DJI’s core supplier system and began undertaking the R&D adaptation, sample verification, and mass delivery of AZ91D magnesium alloy drone brackets and lightweight fuselage structural components at the level of tens of millions of pieces, marking the beginning of a long-term and in-depth strategic cooperation.
Since its establishment, our company has focused on the single field of high-end precision magnesium alloy die casting. It specializes in the R&D and production of lightweight structural components for drones and high-end intelligent equipment. Moving away from extensive mass-production models, the company has continuously advanced process innovation, precision optimization, quality upgrading, and capacity iteration.
The company has built a full-industry-chain production service system suitable for high-end drone brands. This system covers AZ91D magnesium alloy raw material selection and modification, semi-solid die-casting forming, micron-level precision machining, surface electroplating treatment, salt spray and weather-resistance testing, large-scale mass production delivery, and customized structural iteration. It is one of the few domestic suppliers of drone magnesium alloy structural components capable of achieving ultra-high-precision forming, extreme lightweight performance, full-process weather-resistance support, and stable mass production at the level of tens of millions of pieces.
In terms of technology R&D, the company has established a dedicated drone structural component R&D team. The team focuses on technical pain points in drone lightweight design and high-precision forming, and has carried out targeted research on the core process of semi-solid magnesium alloy die casting. By optimizing key links such as melt ratio, temperature control, pressure forming, and stress release, the company has improved the forming characteristics of AZ91D magnesium alloy materials and thoroughly solved problems commonly found in traditional die-casting processes, including precision deviation, porosity, looseness, and stress deformation.
The company has accumulated extensive precision forming parameters and iterative experience for high-end drone structural components. It can closely cooperate with DJI’s new product development schedule and quickly complete customized structural development, process optimization, and sample implementation.
In terms of manufacturing, the company has introduced fully automated semi-solid die-casting production lines, five-axis CNC precision machining equipment, and intelligent mold maintenance systems. It has established an integrated production chain covering die-casting forming, precision machining, surface treatment, and performance testing. Relying on mature mold R&D and manufacturing technology, the company ensures high-precision mold stability and achieves a stable mold service life of more than 150,000 shots per mold set, preventing precision deviation during mass production.
In terms of quality control, the company has established a full-process quality management system benchmarked against high-end international standards in the drone industry. It strictly implements standardized electroplating processes and is equipped with professional salt spray testing, weather-resistance testing, dimensional accuracy inspection, and structural strength testing equipment. Core indicators such as product tolerance, surface flatness, density, corrosion resistance, and load-bearing strength are subject to 100% inspection, ensuring that every product meets DJI’s strict quality entry standards.
In terms of large-scale delivery, the company has flexible mass-production capability and substantial capacity reserves. A single mold set can stably produce 3,000 pieces per day, enabling annual delivery at the level of tens of millions of pieces. This not only meets DJI’s regular large-volume procurement requirements but also allows rapid response to new product small-batch customization, iterative development, and urgent replenishment orders. The company’s delivery stability and response speed are industry-leading.
The AZ91D magnesium alloy drone brackets and lightweight fuselage structural components supplied to DJI in this project are based on two core advantages: the company’s independently improved semi-solid magnesium alloy die-casting process and micron-level precision machining technology. Combined with a complete electroplating and salt spray testing system, these products achieve industry breakthroughs in five core dimensions: machining precision, lightweight performance, structural stability, weather resistance, and mass-production reliability. They perfectly meet DJI’s requirements for precision assembly, long-term flight, and complex operating conditions, and their core technical advantages far exceed those of traditional industry products.
Traditional magnesium alloy die casting in the industry mostly adopts a fully liquid forming process. Due to uneven melt flow and unstable forming pressure, defects such as internal pores, looseness, wall thickness deviation, and residual stress are highly likely to occur, resulting in insufficient structural strength and stability.
Our company adopts an improved semi-solid magnesium alloy die-casting process. By precisely controlling the solid-liquid ratio of the magnesium alloy melt and optimizing the forming pressure and temperature curve, the melt fills more evenly and the formed structure becomes denser. This effectively eliminates various forming defects found in traditional processes.
This process significantly improves internal density and structural rigidity, reduces the probability of deformation during subsequent machining, and enhances forming consistency and product yield. From the source, it ensures the load-bearing stability of drone brackets and fuselage structural components, preventing flight attitude deviation, vibration noise, and other problems caused by structural deformation during flight.
Relying on proprietary precision machining technology and a digital process control system, the company has broken through the industry’s precision bottleneck. Local machining tolerance can reach 0.01 mm, far exceeding the conventional industry standard of 0.05 mm.
For key precision areas such as assembly holes, positioning grooves, and fitting surfaces of drone brackets, the company adopts five-axis CNC micron-level precision milling technology. Dimensional tolerances and geometric tolerances are strictly controlled to ensure extremely high assembly fit and uniform gaps, perfectly matching DJI’s precision assembly requirements for complete drone systems.
Ultra-high machining precision effectively reduces overall assembly errors, decreases operational vibration during flight, improves sealing performance and structural stability, and ensures the accuracy and stability of drones during high-speed flight and hovering operations.
Thanks to the lightweight material advantages of high-end AZ91D magnesium alloy and the optimized thin-wall forming process, the drone structural components produced by our company can reduce the overall fuselage weight by more than 20%.
Magnesium alloy itself features low density and high specific strength. Combined with the precise thin-wall forming capability of semi-solid die casting, it can minimize redundant structural weight while fully ensuring load-bearing strength and impact resistance.
Lightweight fuselage upgrading can effectively reduce drone flight energy consumption, significantly improve endurance, effective payload, and flight flexibility, while reducing body inertia and improving control accuracy during start-stop, turning, and hovering. This comprehensively enhances DJI drones’ core flight performance and supports a wide range of applications, including consumer aerial photography and industrial inspection.
For drones operating outdoors for long periods, complex working conditions such as high and low temperature alternation, high humidity, rain, dust, and salt spray corrosion must be considered. Our company has established a complete post-treatment and performance testing system.
All products undergo standardized precision electroplating treatment, forming a dense protective surface layer that effectively improves oxidation resistance, corrosion resistance, and wear resistance. Before delivery, 100% of products undergo salt spray testing and weather-aging testing to strictly verify their structural stability and protective performance under extreme environments.
Magnesium alloy structural components treated through the full process can effectively resist erosion caused by complex outdoor environments, greatly reduce the probability of structural aging, corrosion, and damage, extend the service life of the entire drone, reduce after-sales failures and maintenance costs, and ensure stable all-weather drone operation.
The company has long been engaged in the R&D and manufacturing of drone structural component molds. By adopting high-precision mold machining processes and dedicated mold maintenance technology, it has greatly improved mold stability and service life. A single mold set can reach a service life of 150,000 shots, far exceeding the industry average of 80,000 to 100,000 shots.
The extended mold life effectively avoids problems such as mold wear, precision deviation, and frequent mold change and debugging during mass production, ensuring consistency of precision and stability of quality in batch products.
At the same time, a single mold set can stably produce 3,000 pieces per day. With a multi-mold parallel production system, the company can easily achieve an annual production capacity at the level of tens of millions of pieces. This not only meets DJI’s large-scale regular batch delivery requirements but also ensures rapid implementation of new product iterations and customized orders. The company’s mass-production efficiency and delivery stability are industry-leading.
Relying on its mature semi-solid die-casting core process, micron-level precision machining capability, comprehensive full-process quality control system, and large-scale mass-production strength, our company successfully completed the R&D adaptation, sample certification, small-batch trial production, and large-scale mass delivery of AZ91D magnesium alloy drone brackets and lightweight fuselage structural components for DJI.
At present, the full range of products has been successfully applied to DJI’s consumer-grade aerial photography drones, industrial inspection drones, security operation drones, and other series of models. They fully cover supporting applications for both civil and industrial scenarios, achieving stable installation at the level of tens of millions of pieces.
With 0.01 mm ultra-high machining precision, a weight reduction effect of more than 20%, a 100% salt spray weather-resistance compliance rate, and stable mass-production delivery capability, the company’s product yield rate, delivery qualification rate, and delivery timeliness rank among the top suppliers in DJI’s core supplier system. Its cooperation quality and delivery capability have been highly recognized by DJI’s technical R&D team and procurement supply chain team.
Throughout the long-term cooperation, our company has fully leveraged the core advantages of a local enterprise: fast technical response, strong customization capability, high production flexibility, and short service chain. We have closely followed DJI’s drone product iteration schedule and rapidly responded to various needs, including structural optimization, process upgrading, new product adaptation, and urgent delivery.
This has completely solved previous pain points associated with reliance on overseas suppliers for high-end precision magnesium alloy drone structural components, such as high procurement costs, long delivery cycles, delayed iteration response, and complicated after-sales maintenance.
At the same time, localized mass production at the level of tens of millions of pieces has significantly reduced DJI’s procurement costs, logistics costs, and supply chain management costs for core components, shortened the cycle for new product mass production, and helped DJI continuously improve key indicators such as endurance, control precision, and weather resistance. This has effectively strengthened DJI’s product competitiveness and market share in the global drone market.
With its leading magnesium alloy die-casting technology and mass-production capability, our company has become an indispensable core local supporting enterprise for DJI’s lightweight drone structural components, continuously empowering DJI’s high-end product upgrading.
The deep strategic cooperation with DJI is a landmark achievement in the localized high-quality supply of high-end, high-precision magnesium alloy die-cast components for domestic drones. It has completely broken the technical and mass-production monopoly of overseas manufacturers in the field of ultra-high-precision magnesium alloy drone structural components, and carries significant value in technological innovation and industry demonstration.
For a long time, ultra-high-precision magnesium alloy die casting at the 0.01 mm level and mass-production technology for long-lasting, weather-resistant lightweight structural components were monopolized by overseas companies. Most domestic manufacturers were restricted by shortcomings in traditional die-casting processes, insufficient precision machining capability, poor mold stability, and lack of full-process supporting systems. As a result, they were unable to enter the high-end supply chains of leading drone brands such as DJI, causing domestic high-end drone lightweight core components to remain dependent on imports and creating industry pain points such as high supply chain costs and weak independent controllability.
Through independent technological research, our company has successfully overcome a series of core technical bottlenecks, including semi-solid magnesium alloy precision die casting, micron-level ultra-high-precision machining, long-life mold mass production, and full-process weather-resistance protection. It has achieved comprehensive improvements in five core dimensions for AZ91D magnesium alloy drone structural components: precision, lightweight performance, stability, weather resistance, and mass producibility. The core product indicators fully match and even surpass those of imported overseas products.
The extreme machining precision of 0.01 mm, the fuselage weight reduction effect of more than 20%, the ultra-long mold life of 150,000 shots, and stable production capacity at the level of tens of millions of pieces fully demonstrate the company’s top-level technical strength and large-scale supporting capability in the field of high-end magnesium alloy die casting. This marks that domestically produced precision magnesium alloy drone structural components now possess the strong capability to replace imports and support global leading drone brands.
This successful localized supply not only helps DJI eliminate dependence on imported high-end magnesium alloy structural components, comprehensively optimize its supply chain system, reduce production costs, improve core product performance, accelerate new product iteration, and greatly enhance supply chain autonomy and risk resistance; it also effectively fills the technical gap in the domestic field of high-end, high-precision magnesium alloy die casting for drones.
It provides a mature and replicable model for domestic drone component enterprises to break through technical barriers and enter high-end supply chains. It strongly promotes the upgrading of China’s drone magnesium alloy die-casting industry toward ultra-high precision, extreme lightweight design, full-process quality management, large-scale production, and high-end development. It also supports China’s drone industry in achieving independent control of core components, quality upgrading, and enhanced global competitiveness.
The DJI high-precision magnesium alloy die-cast component supply project is a core achievement of our company’s long-term focus on the high-end precision magnesium alloy die-casting sector and its commitment to independent technological innovation and continuous process iteration. It is also a benchmark case for the localization and import substitution of core lightweight components for domestic high-end drones, breaking overseas technical monopolies and fully demonstrating the hard-core technical strength and industrial supporting value of local precision manufacturing enterprises.
In the future, our company will continue to focus on the core field of lightweight drone structural components. We will further increase R&D investment in semi-solid die-casting process iteration, precision forming technology, and the application of new magnesium alloy materials. We will continue to optimize product machining precision, lightweight performance, structural strength, and weather resistance, and further improve mold service life, mass-production yield rate, and flexible customized delivery capability.
At the same time, we will continue to deepen comprehensive and global strategic cooperation with DJI, closely following the industry trends of miniaturization, high integration, long endurance, and high weather resistance in drones. We will continue to expand the range of supporting products and the scale of cooperation, fully supporting the performance upgrading and global market expansion of DJI’s full product range, and continuously empowering the independent, high-end, and international development of China’s high-end drone precision manufacturing industry.
