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What are the acceptance points of centrifugal smoke exhaust fan?
What are the acceptance points of centrifugal smoke exhaust fan:1. The appearance of the centrifugal smoke exhaust fan shall conform to the drawing size;2. The design of the housing and legs of the smoke exhaust fan shall ensure sufficient strength and stiffness. When the external force and external …post time：2020-11-30More>> -
Anti counterfeiting marks will be added from July 19, 2019
Since July 18, 2019, all fans produced by our company have been attached with QR code anti-counterfeiting label. Scratch off the coating can be scanned by mobile phone. One machine, one yard, the first scan shows the genuine Quanfeng. Scanning for the second time will prompt non first query, beware o…post time：2020-09-02More>> -
On two kinds of CCC marks of trademark
According to the announcement of CNCA on the reform of compulsory product certification mark (No. 10 in 2018) Article 3, simplify and integrate the categories of CCC logo. Since March 20, 2018, CCC logo will no longer be labeled with s (safety products), EMC (electromagnetic co…post time：2020-09-02More>> -
The report of CCC sampling inspection in 18 years has been published. Please contact if necessary.
post time：2020-09-02More>> -
CQC quality management system certification renewal completed
post time：2020-09-02More>> -
The company won the "discovery. 2017 National Science and technology innovation outstanding achievement award" with a new energy-saving and high-efficiency fan
Hong Junshan, the technical department of our company, has been awarded the second prize of excellent papers in the 14th China Science Forum and was invited to attend the 14th China Science Forum in Beijing. With a new energy-saving and high-efficiency fan (Patent No.: zl2014 2 0507207.3)…post time：2020-09-02More>> -
Knowledge introduction of aluminum alloy positive pressure air supply outlet
Aluminum alloy positive pressure air supply outlet is used at the end of ventilation and air conditioning system, and its operating temperature is 70 ℃. In case of fire, it is necessary to isolate the fire source at the air supply and exhaust outlet; if it is linked with the fan, the dou…post time：2020-09-02More>> -
What is the difference between the total heat exchanger of fresh air ventilator and fresh air unit
The sensible heat exchanger or total heat exchanger is built in the fresh air ventilator to recover part of the energy discharged from the outdoor air, so as not to increase the indoor energy consumption too much. It is characterized by forcing the replacement of new "old" wind, which is …post time：2020-09-02More>> -
Operation points of axial flow fan
Test run 1. After the fan is installed, the flexibility of fan rotation should be checked before starting, and whether the blade is jammed and rubbed by hand. Check whether there are tools and other debris left in the fan and adjacent pipes. 2. Check whether the air …post time：2020-09-02More>> -
Mould industry is still cold
Mold industry has always been regarded as the mother of industry. In the first anniversary of the financial crisis, as an upstream industry, mold industry has quietly ushered in a warmer spring. However, the reporter learned from the "asiamold Guangzhou International Mould application and design and …post time：2020-09-02More>> -
The advantage of ceramic blade in die hard milling is analyzed
In order to maintain competitive advantage in the world today, mold manufacturers need to continuously produce high-quality products in a very short period of time. In order to achieve this goal, we should develop advanced manufacturing technology and cutting tool materials, so that the m…post time：2020-09-02More>> -
General situation and development trend of die steel
In order to meet the special requirements for the technological properties of steel in the process of plastic mold manufacturing, the following four types of special plastic mold steel are developed. 1) the plastic mould steel for mirror grinding has high purity, high density, …post time：2020-09-02More>>
