On December 22, STMicroelectronics announced that it had signed a silicon carbide project with Ideal. Sanan and Ideal have a joint venture in silicon carbide industry. Why did Sanan lose this market share? Please explain whether Sanan's silicon carbide failed to pass the test or did not meet the standards.

Sanan Optoelectronics: Hunan Sanan's silicon carbide production capacity is gradually being released. Its product performance is leading the industry and has won the trust of well-known domestic and foreign customers. It has been widely used in photovoltaics, energy storage, new energy vehicles and other fields with high reliability requirements. Hunan Sanan and Ideal jointly established Suzhou Sko Semiconductor, with an annual production capacity of 2.4 million silicon carbide half-bridge power modules; Hunan Sanan and STMicroelectronics established a joint venture foundry company in Chongqing to produce silicon carbide epitaxy and chips exclusively for STMicroelectronics.