public class BizProductCode {
// 下订交易
public static final String PRE_PAY = "20101";
// 即时到帐交易
public static final String INSTANT_PAY = "20201";
// 担保交易
public static final String ENSURE_PAY = "20202";
// 合并支付
public static final String MERGE_PAY = "20301";
// 充值
public static final String DEPOSIT = "10101";
// 代充
public static final String OPT_DEPOSIT = "10102";
// 普通提现
public static final String WITHDRAW = "10210";
..............