110 waterproof sleeve

Steel plastic waterproof embedded sleeve series;

Advantage 1: It does not require drilling and is more labor-saving.

Advantage 2: No need for waterproofing, more effortless.

Advantage 3: With a sturdy steel outer layer, it is more sturdy and will not be crushed during casting.

Advantage 4: The lower part has a waterproof layer, effectively avoiding water leakage and seepage.