seamless steel pipe造句怎么写

Liaocheng seamless steel pipe business experts said that the first half of the approximately 50% of production is sold in the spot market.

Liaocheng seamless steel pipe business experts said that the progress Rio Tinto, the Ministry of Foreign Affairs has been described in detail.

The suspension framework was welded by the seamless steel pipe, the hand crane and suspension framework are fixed on the suspension coop.