With the rapid expansion of China's methyl chlorosilane capacity, the organic silicon industry's single capacity overcapacity, lack of demand, under-employment, significant decline in efficiency, and low concentration of key products gradually emerged. The silicone industry accelerated the transformation of development methods and vigorously promoted Structural Adjustment. During the “Twelfth Five-Year Plan” period, the industrial structure adjustment of China's organic silicon industry achieved initial results, the production concentration of key products was getting higher and higher, the equipment level was significantly improved, and the quality of industry development was improved. The momentum of blind construction of methyl monomer has been effectively curbed. Compared with the end of the “Eleventh Five-Year Plan”, the production capacity has expanded by 1.34 times and the output has increased by 2.15 times. Through expansion and mergers and acquisitions, several large-scale and technical levels have emerged. Higher backbone enterprises; silicone silicone polymer such as 110 silicone rubber, 107 silicone rubber and dimethicone oil changed from dispersion production to centralized production, and silicone monomer enterprises became major suppliers; domestic silicone building sealants have occupied Most of the domestic market share, exports have maintained a relatively fast growth momentum, the advantages of key enterprises have become more prominent, and the brand effect has become increasingly apparent.