A spasm is a sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ such as a heart, or a similarly sudden contraction of an orifice.It most commonly refers to a muscle cramp which is often accompanied by a sudden burst of pain, but is usually harmless and ceases after a few minutes. spasm is a sudden, involuntary contraction of a muscle, a group of muscles, or a hollow organ such as a heart, or a similarly sudden contraction of an orifice.
Top 10 largest Cement Producing Countries in the World. China has the first stage in the list of cement producing countries. They produce more than 2482 million tonnes. It is mainly used for construction and china is highly populated.
1 Union Cement changes name to Holcim Philippines. 2  Fijian cement prices increase. 3  Cement and concrete prices rise in the south. 4  Top 4 NYSE Stocks In The Cement Industry. 5  Philippines: higher cement sales in first nine months. 6  Conch Cement is the largest cement producer in the world. 7  San Miguel president eyes Lafarge's cement plants in Philippines.