It adopts outer pipe co-extrude technology, improving the joint stress among layers.
It adopts outer pipe co-extrude technology, improving the joint stress among layers.
采用的外管共挤技术，提高了管材的层间结合强度。
It adopts outer pipe co-extrude technology, improving the joint stress among layers.
采用的外管共挤技术，提高了管材的层间结合强度。