Can you think of this? Dongfeng Tianlong, who has been with Lao Liuchi for 2 million kilometers, still struggles in the transportation line. 6x4 drive, Dongfeng Cummins L-Series 375-horsepower engine, 12-speed gearbox and 4.33 speed rear axle. Such a power configuration, even today, is just not going to happen. Years inevitably made marks on Dongfeng Tianlong's body. In 12 years, the reliable Dongfeng Tianlong brought unexpected benefits to Lao Liu. Strong engine power, powerful pulling goods, overtaking speed, low engine fuel consumption, fuel saving, peace of mind. When he went to 1.7 million kilometers, Lao Liu replaced the gearbox and the rear axle for his old man; when he ran to 2 million kilometers, Dongfeng Cummins’ engine had not experienced any major failure. "Car this thing you have to be good for it, it can be good to you. Dongfeng Tianlong I spent 12 years, did not feel bad to use, power to choose the right, nor see my 'classic car' uphill like a worm "" Old Liu knows that one day his old man will have to "retire." When one thinks of that day, he will come to his heart, but Dongfeng Cummins will always accompany old users like Liu. The Dongfeng Cummins engine has already entered millions of households, bringing affluent well-being to millions of users. The engine will not move forever, and the world of Dongfeng Cummins and users will never stop moving.
The role of the brightener is to convert the invisible ultraviolet radiation absorbed by the product into purple-blue fluorescent radiation, which complements the original yellow radiation to become white light, and improves the whiteness of the product under sunlight. Brighteners have been widely used in textiles, papermaking, washing powder, soap, rubber, plastics, pigments and paints.
Generally, brighteners are divided into two categories, one is water-soluble brighteners, and the other is water-insoluble brighteners. The former can be used as a brightener for paper, paint, washing powder and cotton fabrics. The latter can be used for whitening of chemical fibers and plastics.
It is often divided into:
This product is especially used for the molding and processing of various plastics and plastic products under high temperature. Because of its good heat resistance, light resistance and chlorine resistance, it is a brightener for polyester fibers. Polyester, cotton and other fiber blended fabrics The whitening effect is also particularly ideal, and can be used for the whitening of polyester stock solution.
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Master Liu used 12-year Dongfeng Tianlong tractors with Dongfeng Cummins engines 
Dongfeng Cummins Engine
Fluorescent brightener for detergents; Fluorescent brighteners for textiles; Fluorescent brighteners for papermaking; Fluorescent brighteners for plastics and synthetic materials; Fluorescent brighteners for other purposes.
In May 2006, Dongfeng Tianlong was born in Shiyan, Shancheng. In October of the same year, Shandong Tai’an Master Liu Shuangshan purchased Dongfeng Tianlong tractors equipped with Dongfeng Cummins engines. The time was short and it was 12 years.