According to related statistics show that in 2015 China's total transaction volume will exceed 80 billion yuan gravel, in today's sand sand sand source alternative background Sand demand is also showing growth. Under such a good social background, many customers see a wealth of opportunities, investment projects profitable sand, which is a manifestation of wisdom, in the procurement of sand or sand production line, sand making machine manufacturers to investigate, There are four main parts, one qualification certificate, see if there is a business license, if there are some high gold content of the certificate, such as high-tech enterprises, scientific and technological progress awards; two manufacturing plants to see if the company has a separate process workshop, equipment strength, to determine whether it is a front company; the third is the customer site, the customer asked to see the scene, Sand companies for marketing will take you to visit the relevant site, but you'll want to observe, ask; Fourth Compare prices, and doing your research FIRMS contrast, take a look at someone's integrated high-value, high cost; With these visits, I believe you will choose the right sand, put into production as soon as possible to recover the costs, access Pirates income, business or backgammon. 

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