For a good filter material of protective mask, the following three conditions should be met: first, the filter efficiency is high when the mask and the user's face are well closed.
Research and development,sales in one of the science and technology innovative enterprises
Shandong Hongtong Auto Technology Co., Ltd. is located in Zhucheng, Shandong Province, the hometown of dinosaurs. It is a private enterprise focusing on the research, development and production of auto parts products. Set r & D, production, sales, service in one, can independently carry out product and production process
The company's main products include wheel covers, battery box covers, automobile anti splash, parking wedges, right turn alarms, triangle warning signs, reflective clothing, retro reflectors, fire extinguishers, automobile safety belts, warning lights, dangerous goods vehicle signs, motor vehicle exhaust spark extinguishers (fire caps), etc......
more>>Shandong Hongtong Auto Technology Co., Ltd. is located in Zhucheng, Shandong Province, the hometown of dinosaurs. It is a private enterprise focusing on the research, development and production of auto parts products. Set r & D, production, sales, service in one, can independently carry out product and production process....
<<more>>Hongtong technology registered capital as high as 36 million yuan,
The company covers an area of 31000 square meters,
Our products are exported to more than 150 provinces,
Meet the personalized needs of users
Strength makes quality