Longkou City Gas Chemical Plant Longkou City Gas Chemical Plant is a hi-tech gas producing and marketing plant. It mainly produces over 99.9% high-purity “hydrogen sulfide”. With advanced tec hnology, top quality, it substitutes imported products and has won National Grade New Product Honor Title and Shandong Province Science & Technology Advance Prizein 1994. High-purity hydrogen sulfide is widely used in metallurgy, chemical ind ustry and scientific research etc.    The plant also manages various high-purity gases and multi-elemental gas mixtu re that are used in scientific research, medical treatment, environmental protect ion, gaseous phase, color spectrum, correction, detection, leak detecting etc of analysis meter.   The storage containers of various gases: 4,8,40, liter cylinders. Shan Zhen, director of the plant, warmly welcomes customers of home and abroad to use our products. Please contact us for business, collaboration and common de velopment.