How to solve the problem of garbled characters in snmp_export output

[heilongbo]

generator.yml

auths:
  auth_idc:
    version: 3
    username: test
    security_level: authPriv
    password: 123456
    auth_protocol: SHA
    priv_protocol: AES
    priv_password: 123456

modules:
  server_sys:
    walk:
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.67.80.85.49.32.68.84.83.0.0.0.0.0.0.0.0.0
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.67.80.85.50.32.68.84.83.0.0.0.0.0.0.0.0.0
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.80.83.49.32.84.101.109.112.0.0.0.0.0.0.0.0.0
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.80.111.119.101.114.49.0.0.0.0.0.0.0.0.0.0.0
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.80.83.50.32.84.101.109.112.0.0.0.0.0.0.0.0.0
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.80.111.119.101.114.50.0.0.0.0.0.0.0.0.0.0.0
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.83.89.83.32.49.50.86.95.49.0.0.0.0.0.0.0.0
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.83.89.83.32.49.50.86.95.50.0.0.0.0.0.0.0.0
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.83.89.83.32.51.46.51.86.0.0.0.0.0.0.0.0.0
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.83.89.83.32.53.86.0.0.0.0.0.0.0.0.0.0.0
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.73.110.108.101.116.32.84.101.109.112.0.0.0.0.0.0.0
      - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2.17.79.117.116.108.101.116.32.84.101.109.112.0.0.0.0.0.0

snmpwalk output shows

iso.3.6.1.4.1.2011.2.235.1.1.13.50.1.1.17.67.80.85.49.32.67.111.114.101.32.82.101.109.0.0.0.0 = STRING: "CPU1 Core Rem"
iso.3.6.1.4.1.2011.2.235.1.1.13.50.1.1.17.67.80.85.49.32.68.68.82.32.86.68.68.81.0.0.0.0 = STRING: "CPU1 DDR VDDQ"
iso.3.6.1.4.1.2011.2.235.1.1.13.50.1.1.17.67.80.85.49.32.68.68.82.32.86.68.68.81.50.0.0.0 = STRING: "CPU1 DDR VDDQ2"
iso.3.6.1.4.1.2011.2.235.1.1.13.50.1.1.17.67.80.85.49.32.68.68.82.32.86.80.80.49.0.0.0.0 = STRING: "CPU1 DDR VPP1"
iso.3.6.1.4.1.2011.2.235.1.1.13.50.1.1.17.67.80.85.49.32.68.68.82.32.86.80.80.50.0.0.0.0 = STRING: "CPU1 DDR VPP2"

snmp_exportes output shows

powerSupplyPowerRating{powerSupplyIndex="1"} 900
powerSupplyPowerRating{powerSupplyIndex="2"} 900
# HELP powerSupplyPresence Information about power presence status. - 1.3.6.1.4.1.2011.2.235.1.1.6.50.1.9
# TYPE powerSupplyPresence gauge
powerSupplyPresence{powerSupplyIndex="1"} 2
powerSupplyPresence{powerSupplyIndex="2"} 2
# HELP powerSupplyStatus Information about power status. - 1.3.6.1.4.1.2011.2.235.1.1.6.50.1.7
# TYPE powerSupplyStatus gauge
powerSupplyStatus{powerSupplyIndex="1"} 1
powerSupplyStatus{powerSupplyIndex="2"} 1
# HELP powerSupplymanufacture Information about power manufacture. - 1.3.6.1.4.1.2011.2.235.1.1.6.50.1.2
# TYPE powerSupplymanufacture gauge
powerSupplymanufacture{powerSupplyIndex="1",powerSupplymanufacture="HUAWEI"} 1
powerSupplymanufacture{powerSupplyIndex="2",powerSupplymanufacture="HUAWEI"} 1
# HELP sensorReading Sensor current reading. - 1.3.6.1.4.1.2011.2.235.1.1.13.50.1.2
# TYPE sensorReading gauge
sensorReading{sensorName="CPU1 DTS���������",sensorReading="-52.00"} 1
sensorReading{sensorName="CPU2 DTS���������",sensorReading="-55.00"} 1
sensorReading{sensorName="Inlet Temp�������",sensorReading="14.00"} 1
sensorReading{sensorName="Outlet Temp������",sensorReading="35.00"} 1
sensorReading{sensorName="PS1 Temp���������",sensorReading="44.00"} 1
sensorReading{sensorName="PS2 Temp���������",sensorReading="39.00"} 1
sensorReading{sensorName="Power1�����������",sensorReading="210.00"} 1
sensorReading{sensorName="Power2�����������",sensorReading="210.00"} 1
sensorReading{sensorName="SYS 12V_1��������",sensorReading="12.18"} 1
sensorReading{sensorName="SYS 12V_2��������",sensorReading="12.18"} 1
sensorReading{sensorName="SYS 3.3V���������",sensorReading="3.30"} 1
sensorReading{sensorName="SYS 5V�����������",sensorReading="5.16"} 1
# HELP snmp_scrape_duration_seconds Total SNMP time scrape took (walk and processing).

The file encoding format is all utf-8, how to solve this garbled problem?