Pesticide residue status and pesticide residue detection technology

Pesticides have played a significant role in protecting crops, controlling pests and weeds, and increasing the yield of crops. They have also improved the human living environment and improved the people’s production and living standards. However, the resulting environmental p.......

Process Improvement and Features of Oilfield High Pressure Gate Valve

Oil wellhead device (tree) gate valve is the largest amount of oilfield dedicated gate valve in the gate valve manufacturing process, the valve body hydrostatic strength test and sealing performance test pass rate is too low (30% ~ 70%), and has long plagued the production plant. In this paper,.......

Self-priming pump structure

The main components of the pump are: camshaft, roller body, plunger and plunger sleeve, plunger spring, rotating sleeve and gear ring, the valve and the seat and the pressure pipe and so on. The plunger sleeve and plunger are a pair of major precision couplings in the fuel inj.......

India further relaxes FDI regulations

The Ministry of Commerce and Industry of the Indian Ministry of Industry Policy and Promotion announced on the 31st the third edition of India’s comprehensive foreign direct investment policy document that it announced further relaxation of restrictions on foreign direct investment .......

What fire pump is used in a small fire truck?

1. Main control parameters The main control parameters selected by the fire pump are the pump's rated flow, rated pressure and suction depth.
Suction depth: The difference in height between the pump reference surface and the suction fluid level.......

Modern R350LC-9V Excavator: Creating Value for Users

During the BMW Shanghai 2014 exhibition, the modern 9V series excavators were introduced to the market and caused a huge stir in the construction machinery industry. The small editor of China Construction Machinery Business Network is still vividly remembering.......