Sunyin Crystal Co., Ltd. was established in 1994 and specializes in sapphire manufacturing and processing. To ensure product quality and meet customer delivery requirements, the company has always placed great importance on the supply and assurance of sapphire raw materials.
In 2008, based on actual demand from customers and the market as well as its own processing capacity and scale, the company established a vertically integrated sapphire supply chain and introduced the flame fusion sapphire crystal growth process. Monthly output reached 10 tons, achieving a closed loop in both quality control and the supply chain.
As sapphire material technology has continued to advance and customer demand for sapphire quality has continued to rise, our company has also comprehensively upgraded its raw material manufacturing processes. In 2024, we introduced the Kyropoulos sapphire crystal growth process. This sapphire material offers better quality, larger crystal dimensions, and lower cost. It is currently the most technologically advanced and highest-quality sapphire material on the market.
A brief introduction to Sunyin Crystal’s current Kyropoulos sapphire materials:
The Kyropoulos sapphire production base is located within the factory premises of Jingyuan Optics (Heyuan) Co., Ltd. in Hudieling Industrial Park, Dongyuan County, Heyuan City, Guangdong Province. Jingyuan Optics is a wholly-owned subsidiary of Sunyin Crystal.
This process is a 120 kg-class Kyropoulos sapphire crystal growth process with a tungsten-molybdenum hot zone.
The company has fully independent capabilities in the production and manufacturing of sapphire equipment, supported by an independent technology R&D team, mature production workshops, and skilled technical personnel.
In terms of quality, through continuous technological exploration and R&D improvements over recent years, we have raised the quality pass rate of sapphire raw materials to over 95%, providing a solid quality foundation for the company’s downstream production and processing.
In terms of cost, electricity consumption is the largest cost component in sapphire material manufacturing. By properly controlling the crystal growth rate, we reduce electricity consumption during production. At the same time, we make full use of the local off-peak electricity policy and precisely align it with our production process, effectively reducing the unit cost of electricity and thereby lowering the manufacturing cost of sapphire raw materials.
In 2025, through its own investment in the construction of photovoltaic power generation facilities and equipment within the factory premises, the company achieved approximately 2 million kWh of annual photovoltaic power generation, all of which is used in the crystal growth process for the company’s sapphire raw materials.
According to estimates based on the national average coal consumption rate for thermal power generation, 2 million kWh of photovoltaic power generation is equivalent to a reduction of approximately 10,400 metric tons of carbon dioxide emissions. This not only effectively reduces manufacturing costs, but also represents a solid step forward in the company’s advancement toward green industrialization.