zhè / jiā / xiǎo / gōng / chǎng / hái / zài / yòng / tǔ / fǎ / liàn / gāng / chǎn / liàng / hěn / dī

这家小工厂还在用土法炼钢，产量很低。

This small factory still uses primitive steelmaking methods, so its output is very low.