1. 英文版本里的：about us 的链接 改成： Over the years, Zhejiang RONGDA explosion-proof electrical co. ltd has long been engaged in the design and produce of mining equipments, like various coal drills, rock drills, gas alarm mining lamps, self-rescuers, exploders etc. RONGDA is located in the “China Electric Capital”-Liushi, Zhejiang next to Yueqing Highway with very convenient transportation. RONGDA set up in 1996, since 16 years development, now company covers an area of about 16650 square meters, building area 9800 square meters. All the products are approved and certified by National authorization institute, including Anti-explosive Certificate and MA Coal Safety Marks. RONGDA is widely praised by users cause of good quality, excellent prices and good service.