diff --git a/device/celestica/x86_64-cel_seastone-r0/sonic_platform/chassis.py b/device/celestica/x86_64-cel_seastone-r0/sonic_platform/chassis.py
index 8da50b612699..bb2f7bdc5ef7 100644
--- a/device/celestica/x86_64-cel_seastone-r0/sonic_platform/chassis.py
+++ b/device/celestica/x86_64-cel_seastone-r0/sonic_platform/chassis.py
@@ -54,8 +54,8 @@ def __initialize_sfp(self):
 
         from sonic_platform.sfp import Sfp
         for index in range(0, NUM_SFP):
-            name_idx = 0 if index + 1 == NUM_SFP else index + 1
-            sfp = Sfp(index, sfputil_helper.logical[name_idx])
+            #name_idx = 0 if index + 1 == NUM_SFP else index + 1
+            sfp = Sfp(index, sfputil_helper.logical[index])
             self._sfp_list.append(sfp)
         self.sfp_module_initialized = True
 
diff --git a/device/celestica/x86_64-cel_seastone-r0/sonic_platform/sfp.py b/device/celestica/x86_64-cel_seastone-r0/sonic_platform/sfp.py
index 8fd7c385e3c2..2da69d793534 100644
--- a/device/celestica/x86_64-cel_seastone-r0/sonic_platform/sfp.py
+++ b/device/celestica/x86_64-cel_seastone-r0/sonic_platform/sfp.py
@@ -847,9 +847,9 @@ def get_rx_los(self):
             A Boolean, True if SFP has RX LOS, False if not.
             Note : RX LOS status is latched until a call to get_rx_los or a reset.
         """
-        rx_los = False
+        rx_los = []
         if self.sfp_type == OSFP_TYPE:
-            return False
+            return rx_los.append(False)
 
         elif self.sfp_type == QSFP_TYPE:
             offset = 0
@@ -861,14 +861,16 @@ def get_rx_los(self):
                 rx2_los = (rx_los_data & 0x02 != 0)
                 rx3_los = (rx_los_data & 0x04 != 0)
                 rx4_los = (rx_los_data & 0x08 != 0)
-                rx_los = (rx1_los and rx2_los and rx3_los and rx4_los)
+                #rx_los = (rx1_los and rx2_los and rx3_los and rx4_los)
+                rx_los.extend([rx1_los, rx2_los, rx3_los, rx4_los])
+                return rx_los
         else:
             offset = 256
             dom_channel_monitor_raw = self.__read_eeprom_specific_bytes(
                 (offset + SFP_CHANNL_STATUS_OFFSET), SFP_CHANNL_STATUS_WIDTH)
             if dom_channel_monitor_raw is not None:
                 rx_los_data = int(dom_channel_monitor_raw[0], 16)
-                rx_los = (rx_los_data & 0x02 != 0)
+                rx_los.append(rx_los_data & 0x02 != 0)
 
         return rx_los
 
@@ -879,10 +881,10 @@ def get_tx_fault(self):
             A Boolean, True if SFP has TX fault, False if not
             Note : TX fault status is lached until a call to get_tx_fault or a reset.
         """
-        tx4_fault = False
+        tx_fault_list = []
 
         if self.sfp_type == OSFP_TYPE or not self.dom_supported:
-            return False
+            return tx_fault_list.append(False)
 
         elif self.sfp_type == QSFP_TYPE:
             offset = 0
@@ -894,17 +896,17 @@ def get_tx_fault(self):
                 tx2_fault = (tx_fault_data & 0x02 != 0)
                 tx3_fault = (tx_fault_data & 0x04 != 0)
                 tx4_fault = (tx_fault_data & 0x08 != 0)
-                tx4_fault = (
-                    tx1_fault and tx2_fault and tx3_fault and tx4_fault)
+                tx_fault_list.extend([tx1_fault, tx2_fault, tx3_fault,
+                    tx4_fault])
         else:
             offset = 256
             dom_channel_monitor_raw = self.__read_eeprom_specific_bytes(
                 (offset + SFP_CHANNL_STATUS_OFFSET), SFP_CHANNL_STATUS_WIDTH)
             if dom_channel_monitor_raw is not None:
                 tx_fault_data = int(dom_channel_monitor_raw[0], 16)
-                tx4_fault = (tx_fault_data & 0x04 != 0)
+                tx_fault_list.append(tx_fault_data & 0x04 != 0)
 
-        return tx4_fault
+        return tx_fault_list
 
     def get_tx_disable(self):
         """
@@ -1357,3 +1359,18 @@ def get_status(self):
             A boolean value, True if device is operating properly, False if not
         """
         return self.get_presence() and not self.get_reset_status()
+
+    def get_position_in_parent(self):
+        """
+        Returns:
+            Temp return 0
+        """
+        return 0
+
+    def is_replaceable(self):
+        """
+        Retrieves if replaceable
+        Returns:
+            A boolean value, True if replaceable
+        """
+        return True
diff --git a/device/celestica/x86_64-cel_seastone-r0/sonic_platform/thermal.py b/device/celestica/x86_64-cel_seastone-r0/sonic_platform/thermal.py
index 2b38ef94d6c4..f6568c0cebe0 100644
--- a/device/celestica/x86_64-cel_seastone-r0/sonic_platform/thermal.py
+++ b/device/celestica/x86_64-cel_seastone-r0/sonic_platform/thermal.py
@@ -7,7 +7,6 @@
 #############################################################################
 
 import os
-import re
 import os.path
 
 try:
@@ -19,14 +18,18 @@
 THERMAL_INFO = {
     0: {
         "F2B_max": 50,
+        "F2B_max_crit": 75,
         "B2F_max": 55,
+        "B2F_max_crit": 75,
         "postion": "asic",
         "name": "Front-panel temp sensor 1",
         "i2c_path": "i2c-5/5-0048/hwmon/hwmon1",    # u4 system-inlet
     },
     1: {
         "F2B_max": 50,
+        "F2B_max_crit": 75,
         "B2F_max": 55,
+        "B2F_max_crit": 75,
         "postion": "asic",
         "name": "Front-panel temp sensor 2",
         "i2c_path": "i2c-6/6-0049/hwmon/hwmon2",    # u2 system-inlet
@@ -51,7 +54,9 @@
     },
     4: {
         "F2B_max": 70,
+        "F2B_max_crit": 75,
         "B2F_max": 55,
+        "B2F_max_crit": 75,
         "postion": "cpu",
         "name": "Rear-panel temp sensor 2",
         "i2c_path": "i2c-15/15-004e/hwmon/hwmon5"   # u9201 system-outlet
@@ -71,8 +76,7 @@ def __init__(self, thermal_index, airflow):
         self._api_helper = APIHelper()
         self._airflow = airflow
         self._thermal_info = THERMAL_INFO[self.index]
-        self._hwmon_path = "{}/{}".format(I2C_ADAPTER_PATH,
-                                         self._thermal_info["i2c_path"])
+        self._hwmon_path = "{}/{}".format(I2C_ADAPTER_PATH, self._thermal_info["i2c_path"])
         self.name = self.get_name()
         self.postion = self._thermal_info["postion"]
         self.ss_index = 1
@@ -109,8 +113,9 @@ def get_high_threshold(self):
             A float number, the high threshold temperature of thermal in Celsius
             up to nearest thousandth of one degree Celsius, e.g. 30.125
         """
-        max_crit_key = '{}_max'.format(self._airflow)
-        return self._thermal_info.get(max_crit_key, None)
+        temp_file = "temp{}_max".format(self.ss_index)
+        temp = float(self.__get_temp(temp_file))
+        return temp
 
     def get_low_threshold(self):
         """
@@ -119,7 +124,7 @@ def get_low_threshold(self):
             A float number, the low threshold temperature of thermal in Celsius
             up to nearest thousandth of one degree Celsius, e.g. 30.125
         """
-        return 0.0
+        return 0.001
 
     def set_high_threshold(self, temperature):
         """
@@ -132,31 +137,33 @@ def set_high_threshold(self, temperature):
         """
         temp_file = "temp{}_max".format(self.ss_index)
         is_set = self.__set_threshold(temp_file, int(temperature*1000))
-        file_set = False
-        if is_set:
-            try:
-                with open(self.SS_CONFIG_PATH, 'r+') as f:
-                    content = f.readlines()
-                    f.seek(0)
-                    ss_found = False
-                    for idx, val in enumerate(content):
-                        if self.name in val:
-                            ss_found = True
-                        elif ss_found and temp_file in val:
-                            content[idx] = "    set {} {}\n".format(
-                                temp_file, temperature)
-                            f.writelines(content)
-                            file_set = True
-                            break
-            except IOError:
-                file_set = False
+        file_set = True
+        if self._api_helper.is_host():
+            file_set = False
+            if is_set:
+                try:
+                    with open(self.SS_CONFIG_PATH, 'r+') as f:
+                        content = f.readlines()
+                        f.seek(0)
+                        ss_found = False
+                        for idx, val in enumerate(content):
+                            if self.name in val:
+                                ss_found = True
+                            elif ss_found and temp_file in val:
+                                content[idx] = "    set {} {}\n".format(
+                                    temp_file, temperature)
+                                f.writelines(content)
+                                file_set = True
+                                break
+                except IOError as err:
+                    file_set = False
 
         return is_set & file_set
 
     def set_low_threshold(self, temperature):
         """
         Sets the low threshold temperature of thermal
-        Args : 
+        Args :
             temperature: A float number up to nearest thousandth of one degree Celsius,
             e.g. 30.125
         Returns:
@@ -172,7 +179,10 @@ def get_high_critical_threshold(self):
             up to nearest thousandth of one degree Celsius, e.g. 30.125
         """
         max_crit_key = '{}_max_crit'.format(self._airflow)
-        return self._thermal_info.get(max_crit_key, None)
+        max_crit_threshold = self._thermal_info.get(max_crit_key, None)
+        if max_crit_threshold is not None:
+            max_crit_threshold = float(max_crit_threshold)
+        return max_crit_threshold
 
     def get_low_critical_threshold(self):
         """
@@ -181,7 +191,7 @@ def get_low_critical_threshold(self):
             A float number, the low critical threshold temperature of thermal in Celsius
             up to nearest thousandth of one degree Celsius, e.g. 30.125
         """
-        return 0.0
+        return 0.001
 
     def get_name(self):
         """
@@ -233,3 +243,21 @@ def get_status(self):
 
         raw_txt = self.__read_txt_file(fault_file_path)
         return int(raw_txt) == 0
+
+    def is_replaceable(self):
+        """
+        Retrieves whether thermal module is replaceable
+        Returns:
+            A boolean value, True if replaceable, False if not
+        """
+        return False
+
+    def get_position_in_parent(self):
+        """
+        Retrieves the thermal position information
+        Returns:
+            A int value, 0 represent ASIC thermal, 1 represent CPU thermal info
+        """
+        if self.postion == "cpu":
+            return 1
+        return 0