On August 20, Jiantao's subsidiary, Daxin Circuit Board (Shenzhen) Co., Ltd., issued a "Notice to Employees": under the influence of environmental protection policies, urban development and renewal of Pingshan District, Shenzhen and other factors, Daxin Circuit Board is scheduled to end its operation before September 30, 2018 and disband the whole factory. It is a pity that such an old and large-scale circuit board enterprise has been disbanded