The photovoltaic industry uses the sun to generate electricity. The sun shines on a special material that stores the sun's energy, called polysilicon.The industry chain of photovoltaic industry is composed of high-purity polysilicon manufacturing, silicon wafer cutting, solar cell chip packaging, photovoltaic module packaging, system installation and service, etc. Monocrystalline silicon rod is made by heating and melting polycrystalline silicon raw material and using long crystal technology.Silicon wafer is made by cutting silicon rod through wire cutting machine, which is the basic raw material for manufacturing solar monocrystalline silicon cells.

China's production of monocrystalline silicon has the advantage of labor cost, China is the world's largest output of solar monocrystalline silicon.Single crystal silicon rod growth equipment has a low capacity of single machine, large demand for funds and skilled workers, even if the market supply is short, enterprises are still difficult to complete large-scale expansion in the short term, most enterprises are small. Industrial chain three, solar cell modules.Longi is mainly engaged in the R&D, production and sales of monocrystalline silicon rods, silicon wafers, cells and modules, as well as the development of photovoltaic power stations and the provision of system solutions, which are the two and three industrial chains mentioned above.

As a mainstream product in the market, crystal silicon batteries have long been competing with monocrystalline silicon and polycrystalline silicon technology routes. Polycrystalline products have occupied the main market share in the past for a long period of time with the advantage of low cost, while the value of single crystal has not been fully reflected. With the breakthrough of single crystal manufacturing technology and significant cost reduction, the market competition pattern of the industry is gradually clear, and the pattern of single crystal dominating the future photovoltaic market is forming.In recent years, under the guidance of the company, the single crystal share in the global market has increased rapidly, and now it has reversed and dominated the market pattern.

In terms of silicon wafer cutting technology, the company took the lead in the industry to realize the substitution of diamond wire cutting technology for traditional mortar cutting technology, and promoted the substitution of domestic cutting equipment and diamond cutting line, which made the cost of slicing link decrease rapidly and the production efficiency greatly improved. In terms of battery components, the company in the industry earlier layout and achieve single crystal PERC efficient battery production capacity scale, constantly improve conversion efficiency and other technical indicators, continue to promote the industry to reduce the cost of per kilo.The company single crystal PERC cell conversion efficiency reached the highest level of 24.06%, broke the industry previously believed that the PERC battery 24% efficiency bottleneck, the third party authority certification testing body TUV Rheine test, the company's component conversion efficiency has reached 22.38%, battery module conversion efficiency continues to refresh the world record. The photovoltaic power generation market is shifting from policy-driven to market-driven, and the risk of large fluctuations in market demand is reduced. The more balanced and diversified market pattern makes the overall fluctuations of the industry weaken gradually, and the global photovoltaic industry shows a more balanced, sustainable and stable development trend.

As battery components prices fall further, the domestic photovoltaic enterprise competition is intense, the enterprise constantly introduced, the application of new technology of efficient products, industrial chain integration accelerating, product market concentration to further improve all aspects of the efficient single crystal products accounted for, effectively promoted the photovoltaic degrees as a decline in the cost of electricity.