Shandong huierdun Industrial Limited Company has been one of the considerable one-time lock manufacturers in China. It specializes in producing Lead Seals, Shi Blockade, Plastic Seals, Meter Box Block, Bird Prevention Device, Cable Sheath, Signboard, and High Security Seals. To the quality of survival, to scientific and technological progress, to manage for efficiency, through hard work. Having professional equipment for Shi Blockade more than 260 units, covering an area more than ten thousand square meters, Huierdun has now developed into a capable and comprehensive enterprise combinning R&D, design, production and sales.our company features low cost and better anti-theft performance, and they are now widely sold throughout the country and abroad in various transport sectors: such as railway transport, air freight, cargo, oil transportation, chemical products transportation, post offices transport, medicine transport and other industries. The additional usage of this product can prevent unnecessary losses. It can also be used in State power grid and southern power grid meter box, meter, high and low-voltage Cabinet box, meter, transformer boxes and are praised by various industries. There are 120 employees in our company, including 8 senior technicians, 5 research design personnel , 6 intermediate technicians; fixed assets worthing more than 26 million Yuan, liquidity more than 42 million Yuan, and annual output value near 200 million Yuan. Each product needs more than 10 strict programs and unqualified products are prohibited from outflow of factory. We has advanced production line, test detection equipment, thus the quality of products are guaranteed. Looking forward to your visit !