Gao Qi South 12th Road, Xiamen Aide Aviation Industrial Park, Huli District, Xiamen. LanguageCert Langsi Examination (China) official website shows that as of February 5, 2022, the Langsi Examination was held at No.2/KLOC-0, Gao Qi South Road, Xiamen Aide Aviation Industrial Park, Huli District, Xiamen. The Langsi Education Consulting Co., Ltd. was established in August 2002. Langsi English Education Studio was dedicated to studying basic education, teaching theory and skills, and exploring the development trend of basic education. With the aim of developing innovative and practical teaching materials and supplementary products, providing high-quality education and training at all levels and English services, it will provide powerful help for teachers' teaching and students' learning.