Beijing Guolitongda Technology Co., Ltd.

Professional contracting; sales (not storage and operation) of germane, monosilane, boric acid, thallium oxide, trimethyl boron, boron trifluoride, synthetic resins containing flammable solvents, paints, auxiliary materials, coatings and other products [closed cup flash point ≤ 60°C], xylene isomer mixtures, n-butyl acetate, ethyl acetate, solvent benzene, cyclohexanone, methanol, phenol, crude benzene, 2-propanol, ethanol [anhydrous] (the dangerous chemicals business license is valid until November 5, 2021); technology promotion; sales of chemical products (excluding dangerous chemicals), building materials, hardware and electrical appliances; import and export of goods; import and export of technology; import and export agency; building decoration engineering. (Market entities shall independently choose business projects and carry out business activities in accordance with the law; projects that must be approved in accordance with the law shall carry out business activities in accordance with the approved content after approval by relevant departments; they shall not engage in business activities of projects prohibited and restricted by national and municipal industrial policies.)