large size can be filled with more powder. It also can change to any color and Surface Treatment, like rubber, UV spray, plating. the parts of plastic injection will be assembled together in our assembly workshop. Its size is 119.6*63MM, and surface treatment is electronic plating. There are some different colors for bottom and top cover. The molds are existed, so we can produced for client at anytime. And it is good for us to control the quality and timing.
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    Mining of mineral resources should first develop mineral deposits with high ore quality, easy mining, external construction conditions and good economic returns. Under the guidance of the overall mining plan of the deposit, under the premise of allowing technical conditions and protecting resources, it is advisable to firstly exploit the infrastructure with small amount of infrastructure construction, fast production and high grade.
    The choice of open pit mining and underground mining methods should be determined based on the comprehensive comparison of factors such as technology, economy, resource development and utilization, ecological environment protection, geological disaster prevention, soil and water conservation, and land reclamation. Open mines should be used in conditional mines.
    The mining of mineral resources should adopt a reasonable mining sequence and mining method. The mining recovery rate and depletion rate should meet the requirements of the state and relevant industry access conditions. At the same time of mining major minerals, symbiotic and associated minerals with industrial value should be planned, integratedly exploited, comprehensively utilized, and prevented from being wasted; minerals that cannot be comprehensively mined or must be simultaneously mined but not yet comprehensively utilized should be taken. Effective protection measures.
    Non-ferrous metal mining design should implement the mine ecological environmental protection and pollution prevention technology policy. For open pit mining, it is advisable to promote the technology of stripping-discharging-land-reclaiming; underground mining, it is advisable to promote the application of filling mining technology, use tailings and waste rock to fill the goaf, and promote the mining technology to reduce surface subsidence. For hydro-exploited mines, it is advisable to promote mining technology with high water reuse rate; for qualified mines, it is advisable to study and promote leaching mining technology, develop integrated mining, selection and smelting, and obtain metal technology directly from the deposit. .
    Non-ferrous metal underground mines must have safety protection technical equipment such as monitoring and control, underground personnel positioning, emergency hedging, self-rescue of pressure, water supply rescue and communication system.
    Non-ferrous metal mine design should meet the following requirements:
    1 It should continue to adopt effective new mining technologies, new technologies, new equipment and new materials;
    2 It should widely absorb the high and high technology of various disciplines, develop more advanced and non-traditional mining technologies, and continuously improve the level of information, digitization and intelligence of mines;
    3 The raw materials and energy consumption should be continuously reduced;
    4 Measures to prevent resource loss and ecological damage should be taken;
    5 should reflect the design concept of building resource-saving and environment-friendly non-ferrous mining enterprises, and promote the sustainable development of non-ferrous metal mining.
    The feasibility study report shall be based on the review, the detailed investigation of the record or the exploration geological report. The preliminary design shall be based on the reviewed and documented exploration geological report; small mines with simple hydrogeological conditions, and reconstruction and expansion of mines. The preliminary design may be based on the detailed geological report reviewed and documented. The feasibility study and preliminary design should evaluate the exploration method, the quality of the survey work, the degree of exploration, the reliability of the resources, and the technical conditions of the mining and processing.
    Due to changes in industrial indicators, changes in mining rights, major changes in resource reserves, and mining of construction projects, the design should be based on the verified and documented resource reserves verification report.
    Design utilization of resource reserves and design of recoverable reserves should be estimated as follows:
    The main types of resource reserves based on 1 are the proven and controlled economic base reserves and the intrinsic economic resources, and the inferred intrinsic economic resources can be used in part;
    2 The inferred intrinsic economic resource credibility coefficient should be selected according to the deposit characteristics and the degree of exploration engineering control, which can be 0.5 ~ 0.8 ;
    3 The amount of design loss shall include the quantity of hanging mines that cannot be recovered by open-pit mining design, the amount of permanent protected pillars that need to be retained for industrial sites, wellbore and permanent structures and structures designed for underground mining, and for law, society, Factors such as environmental protection affect the amount of minerals that cannot be mined;
    4 Design utilization resource reserves can be estimated as follows:
    Design utilization resource reserves = ∑ (economic base reserves + proven, controlled intrinsic economic resources + inferred intrinsic economic resources × credibility coefficient) - design loss
    5 Designable recoverable reserves can be estimated by the following formula: design recoverable reserves = design utilization resource reserves - mining loss 3.0.11 Mines with complex hydrogeological conditions should be in accordance with the current national standard "Specifications for Mining Hydrogeological Engineering Geological Exploration" GB12719 and Mine water control requirements, hydrogeological exploration and research level evaluation. When the degree of hydrogeological exploration and research is seriously insufficient and the impact prevention and control scheme is determined, the design shall propose supplementary exploration requirements.
    The feasibility study and preliminary design should have a special chapter on rock mechanics. The design of large-scale open pit mines and medium and small open pit mines with complicated geological conditions of slope engineering should be based on the reviewed slope engineering geological survey report and slope stability evaluation report; the design of large and medium-sized underground mines with complicated technical conditions should be based on Special report on rock mechanics. The mines that have not carried out rock mechanics research in the feasibility study stage should design the contents and recommendations of rock mechanics research.
    For underground mines with spontaneous combustion and fire, the mine fire prevention design should be based on the self-ignition and fire research report of the ore that has been approved.
    Production and construction scale mining should be based on mining conditions deposits, exploration maturity and reserves deposits, external construction conditions, technology and equipment level, market demand, financing and other factors, after comprehensive comparison computing demonstration and technical and economic OK; production Large-scale mines should study the feasibility and economic rationality of phased construction. The scale of production and construction of non-ferrous metal mines should meet the following requirements:
    The reasonable service life of the mine shall be designed in accordance with the following table . The reasonable service life of the design of the reconstruction and expansion of the mine design should not be lower than 50% of the reasonable service life of the new mine design of the same mining method .
    The construction period of non-ferrous metal mines should not exceed the requirements of the following table .
    Ferrous metals mining design involves safety, environmental protection, water conservation, occupational disease prevention and other facilities should be designed with the main project, constructed and put into production and use.
    For non-ferrous metal mines from the time of production to the time of design and production scale, large and medium-sized mines should not be larger than 3a ; small mines should not be larger than 1a .
    The ratio of annual production to annual production of non-ferrous metal mines should be in accordance with the following table .
    The mine production reserves and reserves have a retention period, which should meet the following requirements:
    The mining work system should adopt a continuous work system. The working days of the mine should be 300d or 330d , and should be 3 shifts per day, and each shift should be 8h . In special climate areas, open-pit mines with seasonal work or special requirements, and underground mines with dust, gas and radioactive materials that seriously affect human health shall be determined according to relevant national regulations and actual conditions.
    Non-ferrous metal mines mining engineering design should be consistent with existing national standards "metal and nonmetal mine safety regulations" GB16423 and "Blasting Safety Regulations" of the relevant provisions of GB6722.
Basic regulations for the design of non-ferrous metals mining
    Feasibility studies and pre-feasibility study of non-ferrous metal mining, mining resources should be based on external conditions and construction conditions, the allocation of resources and market demand, mining technology and equipment conditions that might be taken, financing and investment results, a comprehensive analysis of mine construction The necessity, feasibility and rationality.