China adopted the measures of laying anechoic tiles on the 039 conventional submarine, which greatly improved the anechoic level of the 039 submarine. Type 039 boat uses the fixing bolt as the fixture for fastening the anechoic tile. The fixing bolt is mainly made of metal, and its tail is usually rigidly connected with the submarine shell in the form of welding, so the fixing bolt also becomes the sound leakage channel on the anechoic tile.

The fixing bolt of Type 039 boat is large, and its surface is filled with special paint, but the fixing bolt will still cause noise leakage. Compared with the Yuan-class boat, the use of fixing bolts is very few, and the reduction of sound leakage value of the whole boat tooling will also be very helpful to improve the mute performance of the Yuan-class boat.

In the aspect of the bonding technology of anechoic tile, the bonding technology of meta-class boat has also been greatly improved. Compared with 039 boat, the bonding gap between anechoic tiles is larger, and the laying technology of anechoic tiles on yuan-class boat is very good, and the bonding degree between tiles is close, and the bonding gap is very small. The surface of the whole ship is covered with anechoic tiles, which is very smooth.

Compared with Japanese affinity Canglong class submarine, the laying technology of anechoic tile of meta class submarine is better and the flatness is better. This can not only improve the performance of the anechoic tile, but also improve the smoothness of the boat surface, reduce the added value of the roughness of the boat surface, further reduce the friction resistance of the whole boat and improve the underwater rapidity of the submarine.