In the first three quarters of Qinshang Optoelectronics, the government subsidy included in the current profit and loss was RMB 2.4345 million, while the subsidy for the same period last year was RMB 11.6855 million, a decrease of 79 compared with the same period of last year. The company’s

It was learned from PetroChina that the first tank was successfully delivered to the vehicle that meets the national IV standard, which signifies that PetroChina has completed the task of upgrading its gasoline quality in advance. Previously, the state announced that the gasoline IV standard

Ammonia nitrogen (NH3N) is present in water as free ammonia (NH3) or ammonium salt (NH4+), the composition of which depends on the temperature and pH of the water. For the determination of NH3N in industrial wastewater, the laboratory generally uses ammonia in the wastewater to separate,

Recently, the Ministry of Industry and Information Technology released the list of the first batch of 48 auto companies to withdraw their early warnings. Enterprises entering this list will be dismissed if they fail to pass the relevant assessment within the specified time. From the notice issued

Autumn is a good season for maintenance. Not only people, even cars are in maintenance. In general, due to the economic benefits of second-hand sewage suction trucks and suction trucks , many owners will neglect their maintenance. In fact, this is a big mis

How machine tools can meet high-speed cutting can be roughly divided into the following requirements: 1. The mechanism is designed for high speed operation High-speed machine tools first require high rigidity of their mechanism, and they must absorb high-frequency vibration and high inertia G val

On the 13th, the 23rd executive meeting of the Yichang Municipal Government of Hubei Province discussed and passed the “Management Measures for the Prevention and Control of Motor Vehicle Exhaust Pollution in Yichang City”. The "Measures" clearly stipulates that the city's

Model NO.: LSY 219-4/6/8/9/10/12/15

1 Optimum design of helical gear transmission The mathematical model of the helical gear transmission can be optimized to establish a variety of single objective functions or multi-objective functions. In this paper, the mathematical model is established with the minimum center distance and the sma

  Pump in the process of working part of the energy loss, including mechanical wear and tear, loss of volume and hydraulic losses, mechanical loss refers to the pump sleeve seal friction, bearing friction, impeller surface and liquid friction. The use of Mika Ka Blu-Goo super lubricant to reduce

Recently, Xuangong successfully developed the manufacturing process of SD9 high drive bulldozer valve through independent innovation. It relied on outsourcing for self-research and development in the long-term, further improved the core competitiveness, and significantly reduced the production cost

The first step to safely drive a sewage truck or garbage truck is to carefully inspect before starting. If you do not develop the habit of checking before starting, it will cause safety hazards while driving. In general, the following inspections must be c