Application of hydrochloric acid in the metal processing field, for example, what is the concentrated hydrochloric acid, iron and steel parts before plating treatment standards of concentrated hydrochloric acid and washed first with caustic soda solution to remove the oil, and then soaked in hydrochloric acid; metal before welding, the need to weld coated a little hydrochloric acid, etc., are the use of hydrochloric acid to dissolve metal oxides of this nature, to remove the rust. Such concentrated hydrochloric acid to the metal surface plating was in prison, welding was in prison. Hydrochloric acid and inorganic chemicals in the field of medicine and organic drug production Hydrochloric acid is a strong acid, it is with certain metals, metal oxides, metal hydroxides, and most metal salts (such as carbonates, sulfites, etc.) use of concentrated hydrochloric acid, can react to form the hydrochloride salt. Therefore, in the production of many inorganic chemicals to use hydrochloric acid. In medicine a lot of organic drugs, such as novocaine, thiamine hydrochloride (vitamin B1 preparations), etc., are also made with hydrochloric acid. Standard concentrated hydrochloric acid, concentrated hydrochloric acid, Zhengzhou Longda Chemical provided by Zhengzhou Longda Chemical Products Co., Zhengzhou Longda Chemical Products Co., Ltd. (www.longdahuagong.com/) strong, credible, in Zhengzhou, Henan chemicals industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Zhengzhou Ronda chemicals and you hand into the brilliant, for a better future!