Some investors asked Tefa, can the Tangshan optical fiber prefabricated rod project be completed and put into operation this year, and roughly when? To what extent has the company's air core optical fiber developed, has it been successfully developed, and can it enter the mass production stage? Has the production and sales volume of the company's MPO increased significantly compared to last year, and can it be predicted that there will be a larger increase in the second half of the year or within a year? On September 28, the company replied that the filing information for the investment project of Tangshan Tangxing Weiye Technology Co., Ltd., the holding subsidiary of the company is a “project to produce optical fiber prefabricated rods”, which has not yet been put into operation.

Some investors asked Tefa, can the Tangshan optical fiber prefabricated rod project be completed and put into operation this year, and roughly when? To what extent has the company's air core optical fiber developed, has it been successfully developed, and can it enter the mass production stage? Has the production and sales volume of the company's MPO increased significantly compared to last year, and can it be predicted that there will be a larger increase in the second half of the year or within a year? On September 28, the company replied that the filing information for the investment project of Tangshan Tangxing Weiye Technology Co., Ltd., the holding subsidiary of the company is a “project to produce optical fiber prefabricated rods”, which has not yet been put into operation.