国产情侣酒店自拍,久久99精品久久久久久秒播,日本免费高清一本视频

Your Current Position: NEWS CENTER > Industry trends

08

2020-05

【Industry trends】 How do I identify a refurbished valve?

Nowadays, the valve market is mixed with each other. Illegal vendors make profits by counterfeiting and refurbishing valves
30

2020-04

【Industry trends】 Domestic valves are favored by domestic industrial enterprises

Coal, oil, natural gas and other fossil energy sources are the main energy consumption bodies in today's society.
03

2020-04

【Industry trends】 Trillions of "new infrastructure" is coming, and the demand for pump valve equipment is expected to meet blowout in the second and third quarter.

On March 4, 2020, the Standing Committee of the Political Bureau of the Central Committee held a meeting and proposed to increase investment in public health services
20

2020-03

【Industry trends】 Abolition of 5 national standards such as GB/T 28001-2011 Requirements for Occupational Health and Safety Management System

According to the National Standard Information Public Service Platform, five national standards were abolished on March 7, 2020
07

2020-01

【Industry trends】 What to say about valve sealing

Valve is an important component in the pipeline system of petrochemical plant. It is one of the main leakage sources in the plant because of its variety and quantity...
28

2019-12

【Industry trends】 No negative pressure water supply check valve function

In the complete set of water supply equipment, whether no negative pressure water supply equipment or variable frequency constant pressure water supply equipment...
21

2019-12

【Industry trends】 Status analysis of water treatment industry: most water treatment enterprises are small in scale
30

2019-11

【Industry trends】 The development of intelligent casting has a new demand for casting talents

According to incomplete statistics, the number of enterprises lacking smelting workers, molding workers, engineers,quality control and management personnel in China's foundry industry is about 58%, 20%, 50%, 34%...
16

2019-11

【Industry trends】 The four national valve standards will be implemented on May 1, 2020

Recently, the state administration for market supervision and administration of China (Standardization Administration of China) approved and issued 343 national standards and 2 revision orders of national standards, including...
09

2019-11

【Industry trends】 China general machinery industry association led the participation, BBS and inspection activities have been a complete success

The 18th Russia international exhibition of pump valves, compressors, actuators and engines (PCV exhibition for short) held in Moscow, Russia.

First <Previous ... 6 7 8 9 10 11 12 13 14 ... Next> End

欧美乱码伦视频免费_色琪琪www618seon_日本免费a∨片免费_久久久夜色精品亚洲a_午夜性大片_亚洲综合精品伊人久久