Metal unit of measurement Minimum industrial grade Remarks iron Fe 25-30 manganese Mn 30 chromium Cr203 37-40 titanium Ti02 10-20 Titanium iron ore 1.5-3 vanadium V205 0.7 gold Au 1-5 (g / ton) HG Hg 0.04-0.05 molybdenum Mo 0.2-0.3 Tungsten W03 0.2 Primary deposit uranium U03 0.1 copper Cu 0.4-0.5 lead Pb 0.5-0.7 Zinc Zn 1 aluminum Al203 40 antimony Sb 1-2 Diamond 15-30 mg / m3 Rock tube type ndoor amusement parks equipment is the most novel comprehensive sports stadium. It covers various of comprehensive amusement equipment, including basic zone, exciting zone, adventure zone, digital zone, it is strictly difference from the traditional entertainment industry, is very popular international trend. Indoor sports complex park is a big project and has large target customers, it has strong recognition and landscape effect, integrating body building, sports, parent-child interaction and entertainment in unit. Indoor Park,Slide Indoor Playground,Indoor Slide Playground,Indoor Sky Rider Zip Line HANGZHOU JOY TECHNOLOGY CO., LTD. , https://www.playgroundjoy.com