Requirements related to avoid Tower

(A) the status of enterprise legal persons;
(B) have a fixed office space and mine engineering design or construction of equipment and installations;
(C) engaged in mine engineering and technical personnel must obtain a certificate of the mine engineering qualifications;
(D) mine engineering design or construction professional norms, standards and other information and archive storage conditions;
(E) the establishment of quality assurance systems, with essential conditions and improve the safety rules and regulations.