Grooved acoustic board is the material with specific shape to reduce the effect of the noise. Woody sound-absorbing board is based on acoustics principle delicate to process, it made of material of facing, core and sound-absorbing thin felt.
We have been producing Rotary Drilling Machine for many years. All the products are processed with high precision. All the customers thought highly of our products. And our company has won a lot of awards. The machine has a high torque. The price is not v
Consider this products why still have market, 5G coming we focus on 25G SFP28 100G QSFP 28 manufacturing, 155Mbps/1.25G as well as 10G still have 2 production line for doing so. You can trust the quality, we all know we have to deal with longtime partners
It has good strength [2], it’s resistant to abrasion and heat, possesses good vibration reduction, and excellent casting performance, which requires manual aging treatment.
The drilling rig can be transported without dismounting the drill pipe, which saves the logistics cost and improves the transfer efficiency, and the machine has a good passing performance, and can be flexibly used for construction in the narrow constructi