The following rankings are in no particular order?
Huanwei Electronics (Shanghai) Co. ?
2 Shanghai Hehui Optoelectronics Co.
3 Shanghai Kaihong Electronics Co.
4Huanxu Electronics Co.
5China Electronic Systems Engineering Fourth Construction Co.
6 Shanghai Huajie Electronic Technology Co.
7 Ping An Good House (Shanghai) E-commerce Co.
8Shanghai Amphenol Yongyi Communication Electronics Co.
9Shanghai Herby Electronics Co.
10Shanghai Sense Electronic Technology Co.
13Shanghai Samsung Electronics ?
14Shanghai Shenhe Thermal Magnetic Electronics Co.
15Shanghai Shengrui Electronic Technology Co.
In fact, electronic factories are very harmful to the human body.
There are hundreds of chemicals currently used in the electronics industry, with different hazards to the human body. For example, damage to the nervous system, some easy to cause cancer, some damage to the liver, digestive system or cardiovascular, but also some affect the reproductive system, resulting in women's menstrual disorders, men's sexual function decline. And usually a chemical will also produce multiple hazards to the human body at the same time, wearing the right labor protection products such as gas masks, gas masks is crucial.
Electronic factories often use certain toxic and harmful solvents as cleaning agents, such as washboard water, Tannat water. The main ingredient in washboard water is trichloroethylene, which impairs liver function and has symptoms similar to hepatitis. Some patients with trichloroethylene poisoning have been misdiagnosed as having liver disease and have died because they were not given the right medication. Tianna water is also commonly used, usually contains benzene and toluene, benzene is a highly toxic chemical, has a strong carcinogenicity, chronic benzene poisoning patients with aplastic anemia, that is, leukemia.