diff --git a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/_Partner/Ecommerce/Applyments/CreateEcommerceApplymentRequest.cs b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/_Partner/Ecommerce/Applyments/CreateEcommerceApplymentRequest.cs
index 9f288954..c40bbf10 100644
--- a/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/_Partner/Ecommerce/Applyments/CreateEcommerceApplymentRequest.cs
+++ b/src/SKIT.FlurlHttpClient.Wechat.TenpayV3/Models/_Partner/Ecommerce/Applyments/CreateEcommerceApplymentRequest.cs
@@ -278,7 +278,7 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Models
                 [System.Text.Json.Serialization.JsonPropertyName("mobile_phone")]
                 [WechatTenpaySensitiveProperty(scheme: Constants.SignSchemes.WECHATPAY2_RSA_2048_WITH_SHA256, algorithm: Constants.EncryptionAlgorithms.RSA_2048_ECB_PKCS8_OAEP_WITH_SHA1_AND_MGF1)]
                 [WechatTenpaySensitiveProperty(scheme: Constants.SignSchemes.WECHATPAY2_SM2_WITH_SM3, algorithm: Constants.EncryptionAlgorithms.SM2_C1C3C2_ASN1)]
-                public string MobileNumber { get; set; } = string.Empty;
+                public string? MobileNumber { get; set; }
 
                 /// <summary>
                 /// 获取或设置联系邮箱（需使用平台公钥/证书加密）。
@@ -287,7 +287,7 @@ namespace SKIT.FlurlHttpClient.Wechat.TenpayV3.Models
                 [System.Text.Json.Serialization.JsonPropertyName("contact_email")]
                 [WechatTenpaySensitiveProperty(scheme: Constants.SignSchemes.WECHATPAY2_RSA_2048_WITH_SHA256, algorithm: Constants.EncryptionAlgorithms.RSA_2048_ECB_PKCS8_OAEP_WITH_SHA1_AND_MGF1)]
                 [WechatTenpaySensitiveProperty(scheme: Constants.SignSchemes.WECHATPAY2_SM2_WITH_SM3, algorithm: Constants.EncryptionAlgorithms.SM2_C1C3C2_ASN1)]
-                public string Email { get; set; } = string.Empty;
+                public string? Email { get; set; }
             }
 
             public class UBO