cost and profitability In 2017, the blockchain enters the public eye through bifurcation, CryptoKitties and ICO. Driven by investment opportunities and media attention, traditional businesses and consumers have begun to focus on the cryptocurrency and its underlying blockchain technology. In the 18th century, the western countries successively carried out the industrial revolution, the universal adoption of large machinery, laid the foundation for the establishment of factory system. In 1771, British man Richard arkwright1732-1792 founded the first cotton-yarn factory in the city of kron. In the 1930s and 1940s, the factory system was established in Britain, Germany and other countries. The main sex of factory system is: to carry out large-scale intensive labor; Using big machine to improve efficiency production; Implement the employment system; The division of labor is deepening and production is socialized. The establishment of factory system marks the real birth of enterprises. Read, and strive to let the car can satisfy various age, all kinds of class from the appearance, even the different needs of various cultural background, make cars become true science and art of combining the best image, finally to achieve the most perfect state. HM, Liverpool Widely respected for its expertise in high-end aluminium glazing products, Fenster was approached by programme-makers and asked to supply a premium-quality sliding door.