I. Import and export situation and characteristics of machine tool industry 1. In 2007, exports g ......
The Swedish Sandvik Group is a high-tech industrial company with a history of nearly 150 years. A ......
Wheat is an important food crop in China, with winter wheat accounting for more than 80% of the ......
The oil drum used by our factory is a standard oil drum. The outer dimensions are Φ570mm×900 ......
Model NO.: Q235B ......
1 Scope This standard specifies the requirements for deformed aluminum and aluminum alloy round ing ......
They are two groups of car thieves who are skilled in stealing cars and can steal a car in 38 secon ......
Model NO.: 1070 O ......
To produce pollution-free jujube, it is necessary to use decomposed organic fertilizers such as ......
This kind of vegetable should be a non-polluting, safe and nutritious green product. In the fertili ......
Abstract: This paper introduces three methods and their advantages and disadvantages of mounting ......
Nitrogen is an essential element for flower growth. Application of nitrogen fertilizer can prom ......