Calculate cost of glass tube, rise in price for a reason

At present, most of the industry, including glass tube, glass tube industry, because of soaring costs and raise the price of products. To this, some customers may question: it is necessary to such a substantial rise in price? Glass tube industry, in fact, has for years failed to keep up with the pace of the inflation in marketing price increases. In part because there are a lot of domestic glass tube industry competition unreasonable demand. Over the longer term, however, that the development of this industry is very bad, and will affect the customer itself.
in the first place, it is well known that the main material in the manufacture of the 'glass' glass tube, such as heavy soda ash,