SiFusion / 盾源聚芯

About SiFusion / 盾源聚芯

SiFusion, also known as Ningxia Dunyuanjuxin Semiconductor Technology Corporation, operates as a key manufacturer of materials and components for the semiconductor industry in China. The company was originally established in 2011 as Ferrotec (Ningxia) Quartz Material Co., Ltd. and later restructured and renamed in 2021. SiFusion became formally independent in 2018. The company is a subsidiary of Ferrotec Holding Corporation.

Headquartered in Yinchuan, China, SiFusion specializes in the research, development, and production of semiconductor-grade quartz crucibles, silicon materials, and precision silicon components used in etching machines. Its client base consists of advanced chip manufacturers, and its business spans the upstream and downstream of the semiconductor materials and components industry. The company serves a global market, with customers in mainland China, Taiwan, the United States, South Korea, Japan, and several European countries.

SiFusion's product portfolio is centered around its patented high-purity silicon fusion technology. This technology is used to create polysilicon furnace ware, such as silicon boats, cassettes, and injectors, which are critical for the front-end thermal processes in semiconductor manufacturing. These products, made from 99.9999% high-purity polysilicon, offer performance advantages over traditional quartz and silicon carbide (SiC) consumables by reducing the risk of contamination and improving device yield. For example, the thermal expansion coefficient of SiFusion's products exactly matches that of silicon wafers, which helps to eliminate defects. The company's products are designed for easy installation in most major OEM furnaces. Beyond its silicon-fused products, the company also produces large-diameter silicon ingots and high-purity quartz crucibles.

Significant milestones for the company include the mass production of 12-inch poly-silicon boats starting in 2011, and the successful drawing of a 620mm mono-silicon ingot in 2020, the largest of its kind in the world at the time. The company holds a significant number of technical patents, with 125 reported. SiFusion has raised a total of $188M in funding from 20 investors, including Dingqing Investment, Fuzhe Capital, and Kexi Capital.