详细说明：DF-B10K单向阀单向阀DF-L10H1,单向阀DF-L10H2,单向阀DF-B10H1,单向阀DF-B10H2,单向阀DF-L20H1,单向阀DF-L20H2,单向阀DF-B20H1,单向阀DF-B32H2,单向阀DF-L32H1,单向阀DF-L32H2,单向阀DF-B32H1,单向阀DF-B32H2,)