1, rotary vacuum pump vacuum is not high: (1) If the pump temperature is too high, the sealing degree will drop. If the temperature of the pumped gas is high, the gas should be cooled before entering the rotary vane vacuum pump. If the external temperature is too high, cooling and ventila-----!
The market share of high-end CNC machine tools is an important indicator to measure the competitiveness of domestic machine tool companies. Statistics for the first quarter show that China's imports of machine tools and tools have increased by 61.9% year-on-year, setting a record high.-----!
On November 17th, Jinan, Shandong Province experienced continuous rains and chills. At the working meeting of the expert group of the 16th member representative assembly of the Comprehensive Rubber Utilization Subcommittee of the China Rubber Industry Association, experts held a heated discussion -----!
Recently, Changan Automobile Group and Beijing Tianlutong Technology Co., Ltd. have formally signed a cooperation project in Beijing for the production of new types of special vehicles for environmental sanitation cleaning. It is understood that after the cooperation of the two parties, Changan Sp-----!
From January to June 2011, the company (referred to as "Asia-Pacific stock") realized operating income of 995 million yuan, an increase of 12.94% over the same period of last year; net profit attributable to the parent company's owner was 57.18 million yuan, a year-on-year de-----!
Looking at the overall home lighting industry in 2011, we can easily find that this year's home lighting companies are quieter than ever. Affected by inflation, since last year, the rise in raw material prices, labor costs, and logistics costs has deeply plagued the development of enterprises. -----!
Installation method: 1) Remove the protective cover on both sides of the flange, the American standard ball valve fully open state for flushing and cleaning. 2) Pre-installation should be carried out according to the provisions of the signal (electrical or gas) æ•´æœº test (to prevent the use-----!