The following is a brief introduction to finned heat sinks led by me. Finned heat sinks are commonly used in our LED lighting fixtures. Why? Firstly, they are cost-effective, and secondly, they are easy to process. There are also variants of finned heat sinks, which strictly speaking also belong to the category of finned heat sinks. I will discuss the materials I have encountered with finned heat sinks (I will not mention other composite materials as they are too extensive). The materials include aluminum, followed by iron, and then copper. Copper is rarely used due to its high cost, which manufacturers do not allow. There are two types of processes: forging and extrusion. Examples will be provided below. Forging process: The forging process involves heating aluminum blocks and filling molds under high pressure. Its advantages include a fin height of over 50 mm and a thickness of less than 1 mm, allowing for a large heat dissipation area within the same volume. Forging can easily achieve good dimensional accuracy and surface finish. However, due to the low plasticity of metals during forging, cracking can easily occur during deformation, requiring high resistance to deformation and large tonnage (over 500 tons) forging machines, which leads to high equipment and mold costs, resulting in very high product costs. Extrusion process: Aluminum has been used in the heat sink market for a long time due to its softness and ease of processing. Simply put, aluminum extrusion technology involves heating aluminum ingots at high temperatures, allowing molten aluminum to flow through a grooved extrusion die under high pressure to create rough heat sink blanks. These blanks are then cut and slotted to form the heat sinks we often see. Aluminum extruded fins are low in cost and have a low technical threshold. However, due to material limitations, the ratio of thickness to length of the fins cannot exceed 1:18. It is difficult to increase the heat dissipation area within limited space, resulting in poorer heat dissipation performance for aluminum extruded fins. From the above, we can see the differences between the two types of heat sink structures. Extrusion is relatively simple, while die casting can create complex shapes. Of course, we should not only judge the quality of heat sinks based on their type. We should choose those with a high cost-performance ratio rather than just opting for the best ones. In the end, the effect remains the same. Isn't that a waste? Dongguan Yongya Hardware Electronics Co., Ltd. is a wholly foreign-owned enterprise located in Wanjiang Industrial City, Dongguan City, with very convenient transportation. The company was established in 1997 and has rapidly developed over several years, now possessing fixed assets of 25 million Hong Kong dollars. The factory covers an area of 25,000 square meters with fragrant flowers and an elegant environment where work is orderly. The company mainly produces various aluminum profiles, speaker DVD front panels, various heat sinks for computers and audio equipment, and anodizing processing. Our company integrates mold design, development, and manufacturing with strong technical capabilities and advanced machining and production equipment; we have rich experience in hardware product manufacturing; we possess sufficient capacity for hardware product processing and are one of the fastest-growing hardware product factories in Dongguan. The operators of the company focus on the future by actively learning advanced management practices and introducing advanced technologies while emphasizing talent skill development. The company has fully established an ISO9001:2015 quality management system and an ISO14000:2015 environmental management system. In 2018, our company was the first in the industry to pass safety production standardization certification. We adhere to the principle of "customer-centricity, continuous improvement, excellence, total quality management by all employees, and timely delivery" to meet customers' growing demands for quality and technology while providing high-quality services at low costs to win customer satisfaction and praise. We firmly believe that our quality can ensure your 100% satisfaction and that our products can give you 100% peace of mind. We look forward to long-term cooperation with you to create a better future together.

Dongguan Yongya Hardware Electronics Co., Ltd. is a wholly foreign-owned enterprise located in the Wanjiang Industrial City of Dongguan, with very convenient transportation. The company was established in 1997 and has rapidly developed over the years, now possessing fixed assets of 25 million Hong Kong dollars. The factory covers an area of 25,000 square meters, with fragrant flowers and an elegant environment, and work is orderly. The company mainly produces various aluminum profiles, speaker DVD front panels, various heat sinks for computers and speakers, and anodizing processing. The company integrates mold design, development, and manufacturing, with strong technical capabilities and advanced machining equipment.

Dongguan Yongya Hardware Electronics Co., Ltd. is a wholly foreign-owned enterprise located in the Wanjiang Industrial City of Dongguan, with very convenient transportation. The company was established in 1997 and has rapidly developed over the years, now possessing fixed assets of 25 million Hong Kong dollars. The factory covers an area of 25,000 square meters, with fragrant flowers and an elegant environment, and work is orderly. The company mainly produces various aluminum profiles, speaker DVD front panels, various heat sinks for computers and speakers, and anodizing processing. The company integrates mold design, development, and manufacturing, with strong technical capabilities and advanced machining equipment.

Dongguan Yongya Hardware Electronics Co., Ltd. is a wholly foreign-owned enterprise located in the Wanjiang Industrial City of Dongguan, with very convenient transportation. The company was established in 1997 and has rapidly developed over the years, now possessing fixed assets of 25 million Hong Kong dollars. The factory covers an area of 25,000 square meters, with fragrant flowers and an elegant environment, and work is orderly. The company mainly produces various aluminum profiles, speaker DVD front panels, various heat sinks for computers and speakers, and anodizing processing. The company integrates mold design, development, and manufacturing, with strong technical capabilities and advanced machining equipment.

Dongguan Yongya Hardware Electronics Co., Ltd. is a wholly foreign-owned enterprise located in the Wanjiang Industrial City of Dongguan, with very convenient transportation. The company was established in 1997 and has rapidly developed over the years, now possessing fixed assets of 25 million Hong Kong dollars. The factory covers an area of 25,000 square meters, with fragrant flowers and an elegant environment, and work is orderly. The company mainly produces various aluminum profiles, speaker DVD front panels, various heat sinks for computers and speakers, and anodizing processing. The company integrates mold design, development, and manufacturing, with strong technical capabilities and advanced machining equipment.

Yongya Hardware Electronics Co., Ltd. is a Sino-foreign joint venture located in the Wanjiang Industrial City of Dongguan, with very convenient transportation. The company was established in 1997 and has rapidly developed over the years, now possessing fixed assets of 25 million Hong Kong dollars. The factory covers an area of 25,000 square meters, with fragrant flowers and an elegant environment, and work is conducted in a meticulous and orderly manner. The company mainly produces various aluminum profiles, speaker DVD front panels, and various heat sinks for computers and audio equipment. This company integrates mold design, development, and systematization, with strong technical capabilities and advanced machining and production equipment; it has rich experience in hardware.