China's Electromechanical Products International Bidding Supervision System Initially Formed

The Ministry of Commerce actively responded to the questioning of social challenges. After more than 20 years of exploration and practice, the international bidding management rules and operating models of China's machinery and electronic products have been accepted and adhered to by all parties, becoming a common code of conduct, a standardized, transparent and orderly competition. Domestic and international unified international bidding market for mechanical and electrical products is taking shape.

This unified market is supported by five major systems: the legal construction system, which is based on the Bidding and Tendering Law and the Administrative Licensing Law; the tendering agency system is composed of 206 international tendering agencies; the expert support system is composed of 24,000 experts. The library covers 43 major categories and 761 industries; the network operation system has established the largest and most comprehensive professional website in China, the China International Bidding Network; the administrative supervision system, and implements strong supervision and management at the central, local, or departmental levels.

According to the introduction of the Department of Mechanical and Electrical Industry (Ministry of Mechanical and Electrical Industry) of the Ministry of Commerce, international bidding has not only become an important means for the introduction of major technologies in an open environment, but also has increased the independent innovation capability and core competitiveness of domestic enterprises, and has made China's industrial structure optimized. The investment benefits have been improved. Through the international tendering during the “Eleventh Five-Year Plan” period, the company has saved investment costs of US$ 21.88 billion with an average saving rate of 14.8%. In addition, administrative intervention and power rent-seeking have been greatly reduced, and the institutional and institutional factors on which corruption and commercial bribery depended have been eliminated to some extent.

In order to create an open, fair, and just market environment, the Ministry of Commerce has increased the supervision of all parties involved in tendering and bidding before, during, and after the event, paying particular attention to the use of new methods of supervision and timely response and proper handling of social queries. Effectively strengthen administrative supervision. On the one hand, it continuously improved the international tendering challenge processing mechanism and launched special treatment for outstanding issues. Last year, the nation handled a total of 144 international tender issues in accordance with the law, which ensured the smooth implementation of key national projects such as airports, high-speed rail, and rail transit. In view of the frequent occurrence of vicious doubts in the international tendering and bidding activities in the field of civil aviation, a special study has issued relevant guidance opinions to adjust the administrative oversight of international bidding for mechanical and electrical products in the civil aviation industry, and further clarified the scope and time limits of supervision. Violations of doubts have decreased significantly. On the other hand, we focused on promoting the construction of trustworthiness. Through the establishment of an information release column on the bidding website, we announced the query of the challenged bidder and the tendering agency and bidders and questioned the handling results, prompting the participants involved in bidding activities to be more self-disciplined and effectively preventing Disorderly competition. In 2011, the number of questions in international bidding continued to decline, which was a 23.8% drop from the previous year.

Copper die casting part is similar the aluminum die casting, the die casting machine also the same, but the life of Cu Die Casting Mould is very short, only about 10,000 shots, because the high melting point of copper alloy, it is easy make the mould aging.


The copper die casting, brass die casting production flow chart

Die casting production flow chart


Materials of copper alloy die-casting: Cu 59-1, Cu 63, Cu62;

The precision of the Cu die casting part: ±0.15mm;

Smoothness of rough part: Ra3.2;

Shrinkage rate of brass die casting products: 0.6%;

Material wastage rate: 6%;

Cu die-casting machining allowance: 0.5mm~0.7mm;

Surface preparation methods: Sand blasted, Shot blasting, Powder coating, Painting, Plating, Polishing.


Our company's production equipment and management system

copper die casting production equipment: L.K brand die casting machine From 160T, 200T, 280T, 400T,

CNC machining center: 6;

CNC lathe machine: 12;

Work days of one week: From Monday to Saturday;

Shift work: 2 shift per day;

Working hours: From AM 8:00 to PM 4:30;

2D and 3D drawing Software: AutoCAD, UG, Pro/E, SolidWorks 2015;

QC control: New type NANO CMM, FPI M5000 desktop metal analyzer, Mechanical properties tester.


My company`s strengths of Cu die casting, CNC machining, and QA control.

My company strength of brass die casting, CNC machining, and QA control







Copper alloy die casting parts

Copper die casting, brass die casting, Cu die casting, aluminium bronze die casitng, tin bronze die casting, beryllium bronze die casting

NINGBO BEILUN LEMA MACHINERY TECHNOLOGY CO.,LTD , http://www.china-lema.com