CORPORATION has a 2-year warranty on replaceable parts-Burner, controls, dip tube, drain valve.

公司对于下列可更换配件：燃烧器，控制器，内浸管，排水阀等可更换配件提供2年有限质量保证。

Shanghai Yaofa valve co, ltd. is an integrative corporation of research development manufacturing sales service in the valve business.

上海姚阀阀门是研究开发、生产制造、销售服务于一体的阀门企业。