On March 29, Li Yongwu, president of the China Petroleum and Chemical Industry Association, proposed at the high-level forum on the economic situation of China's petroleum and chemical industry in 2006 that China’s oil and chemical industry must resolve four major contradictions bef…

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Komatsu PC220-5 excavator main pump control system consists of closed valve NC, shut-off valve CO and constant torque valve TVC, servo valve and other components. Closing valve NC is controlled by the pressure difference (Pt-Pd) signal detected by the jet sensor (Pt is the outlet pressure o…

On January 18-20, 2018, leaders of Huo Zhongjun, general manager of Revo Engine, and representatives of 100 outstanding service providers from all over the country attended the 2018 Service Business Conference in Tianjin. The theme of the conference was "custome…

Sodium sulfide is a strong base weak acid salt. As flotation adjusting agent, which other lead ore, sphalerite, yellow copper ore, bismuthinite wa…

1. Seed Fertilizer As a seed fertilizer, the fertilizer applied is generally applied in the lower part of the seed or in the lower part of the seed in advance. The fertilizer and the seed should be kept at an appropriate distance, usually 3-5 cm, to avoid burn seed. Therefore, fertil…

In the past year of 2006, the Chinese automobile industry delivered an exciting transcript: the annual production and sales volume of automobiles reached 7.27970 million vehicles and 721.60 million vehicles, respectively, a year-on-year increase of 27.32% and 25.13%.

In addition …

According to industry insiders, this year is expected to exhibit the first physical exhibits and finished vehicle samples of the hot-rolled H-beam auto beam series of Maanshan Iron and Steel Co., Ltd.

In order to promote the application of hot-rolled H-beam products i…