diff --git a/resources/definitions/hctech_hc300-m1&m1h.def.json b/resources/definitions/hctech_hc300-m1&m1h.def.json
new file mode 100644
index 0000000000..0eaae88098
--- /dev/null
+++ b/resources/definitions/hctech_hc300-m1&m1h.def.json
@@ -0,0 +1,121 @@
+{
+    "version": 2,
+    "name": "HCTECH HC300-M1&M1H",
+    "inherits": "fdmprinter",
+    "metadata": {
+        "visible": true,
+        "author": "HCTECH",
+        "manufacturer": "HCTECH",
+        "file_formats": "text/x-gcode",
+        "platform": "hctech_hc300-m1&m1h.3mf",
+        "has_variants": false,
+        "has_machine_quality": false,
+        "machine_extruder_trains": {
+            "0": "hctech_hc300-m1&m1h_extruder_0"
+        }
+    },
+
+    "overrides": {
+        "machine_head_with_fans_polygon": { "default_value": [
+            [-61, 86],
+            [-61, -31],
+            [21, -31],
+            [21, 86]
+        ] },
+        "machine_name": { "default_value": "HCTECH HC300-M1&M1H" },
+        "machine_extruder_count": { "default_value": 1 },
+        "machine_heated_bed": { "default_value": true },
+        "machine_width": { "default_value": 300 },
+        "machine_depth": { "default_value": 300 },
+        "machine_height": { "default_value": 300 },
+        "machine_center_is_zero": { "default_value": false },
+        "retraction_amount": {
+            "default_value": 0.3,
+            "maximum_value_warning": 2.0
+        },
+        "retraction_speed": { "default_value": 35},
+        "retraction_hop_enabled": { "value": "False" },
+        "retraction_hop": { "value": 0.2 },
+        "retraction_combing": { "value": "'off' if retraction_hop_enabled else 'noskin'" },
+        "retraction_combing_max_distance": { "value": 30 },
+        "travel_avoid_other_parts": { "value": true },
+        "travel_avoid_supports": { "value": true },
+        "travel_retract_before_outer_wall": { "value": true },
+        
+        "retraction_enable": { "value": true },
+        "retraction_count_max": { "value": 100 },
+        "retraction_extrusion_window": { "value": 10 },
+        "retraction_min_travel": { "value": 1.5 },
+
+        "adhesion_type": { "default_value": "skirt" },
+        "gantry_height": { "value": "30" },
+        "speed_print": { "default_value": 60.0 } ,
+        "speed_infill": { "value": "speed_print" },
+        "speed_wall": { "value": "speed_print / 2" },
+        "speed_wall_0": { "value": "speed_wall" },
+        "speed_wall_x": { "value": "speed_wall" },
+        "speed_topbottom": { "value": "speed_print / 2" },
+        "speed_roofing": { "value": "speed_topbottom" },
+        "speed_travel": { "value": "150.0 if speed_print < 60 else 250.0 if speed_print > 100 else speed_print * 2.5" },
+        "speed_layer_0": { "value": 30.0 },
+        "speed_print_layer_0": { "value": "speed_layer_0" },
+        "speed_travel_layer_0": { "value": "100 if speed_layer_0 < 20 else 150 if speed_layer_0 > 30 else speed_layer_0 * 5" },
+        "speed_prime_tower": { "value": "speed_topbottom" },
+        "speed_support": { "value": "speed_wall_0" },
+        "speed_support_interface": { "value": "speed_topbottom" },
+        "speed_z_hop": { "value": 5 },
+        "machine_max_feedrate_x": { "value": 100 },
+        "machine_max_feedrate_y": { "value": 100 },
+        "machine_max_feedrate_z": { "value": 30 },
+        "machine_max_feedrate_e": { "value": 50 },
+        "machine_max_acceleration_x": { "default_value": 2000 },
+        "machine_max_acceleration_y": { "default_value": 2000 },
+        "machine_max_acceleration_z": { "default_value": 100 },
+        "machine_max_acceleration_e": { "default_value": 2000 },
+        "machine_max_jerk_xy": { "default_value": 5.0 },
+        "machine_max_jerk_z": { "default_value": 0.4 },
+        "machine_max_jerk_e": { "default_value": 5.0 },
+        "material_diameter": { "default_value": 1.75 },
+        "acceleration_print": { "value": 1000 },
+        "acceleration_travel": { "value": 1500 },
+        "machine_gcode_flavor": { "default_value": "RepRap (Marlin/Sprinter)" },
+        "machine_start_gcode": { "default_value": "G1 Z2 ;Raise Z\nG28 X Y ;Home XY\nG92 E0 ;Reset Extruder\nG1 E-1 F2400 ;Retract\nG92 E0 ;Reset Extruder\nG1 X315 Y70 F3000 ;clean nozzle\nG1 X330 Y150 F5000\nG1 X315 Y70\nG1 E-1 F2400 ;Retract\nG92 E0 ;Reset Extruder\nG28 Z ;home Z\nG1 X300 Y150\nG12\nG29 ;Measure the bed\nM500 ;Store parameters" },
+        "machine_end_gcode": { "default_value": "G91 ;Relative positioning\nG1 E-1 F2700 ;Retract a bit\nG1 Z1 E-1 F2400 ;Retract and raise Z\nG1 Z2 ;Raise Z\nG90 ;Absolute positioning\nG12 ;clean nozzle\nG1 X5 Y300 ;Return to Start Point\nM106 S0 ;Switch off part cooling fan\nM104 S0 ;turn off temperature\nM140 S0 ;turn off Heated Bed\nM84 X Y E ;Disable all steppers but Z\nM81 ;turn-off power" },
+        "wall_line_count": { "default_value": 3 },
+        "top_bottom_thickness": { "default_value": 1 },
+        "cool_fan_speed": { "default_value": 75 },
+        "cool_fan_full_at_height": { "value": "layer_height_0 + 2 * layer_height" },
+        "cool_fan_enabled": { "value": true },
+        "cool_min_layer_time": { "value": 10 },
+        "brim_replaces_support": { "value": false },
+        "skirt_gap": { "value": 2 },
+        "skirt_line_count": { "default_value": 3 },
+        "switch_extruder_retraction_amount": { "default_value": 2 },
+        "switch_extruder_retraction_speeds": { "default_value": 35 },
+        "prime_tower_enable": { "default_value": true },
+        "infill_pattern": { "default_value": "triangles" },
+        "initial_layer_line_width_factor": { "default_value": 120.0 },
+        "line_width": { "default_value": 0.38 },
+        "travel_avoid_distance": { "default_value": 1 },
+        "infill_overlap": { "value": 35.0 },
+        "skin_overlap": { "value": 10.0 },        
+        "support_angle": { "value": "math.floor(math.degrees(math.atan(line_width/2.0/layer_height)))" },
+        "support_pattern": { "value": "'zigzag'" },
+        "support_infill_rate": { "value": "0 if support_enable and support_structure == 'tree' else 20" },
+        "support_use_towers": { "value": false },
+        "support_xy_distance": { "value": "wall_line_width_0 * 2" },
+        "support_xy_distance_overhang": { "value": "wall_line_width_0" },
+        "support_z_distance": { "value": "layer_height if layer_height >= 0.16 else layer_height * 2" },
+        "support_top_distance": { "value":  "extruderValue(support_roof_extruder_nr if support_roof_enable else support_infill_extruder_nr, 'support_z_distance') + (layer_height if support_structure == 'tree' else 0)"},
+        "support_xy_overrides_z": { "value": "'xy_overrides_z'" },
+        "support_wall_count": { "value": 1 },
+        "support_brim_enable": { "value": true },
+        "support_brim_width": { "value": 4 },
+
+        "support_interface_enable": { "value": true },
+        "support_interface_height": { "value": "layer_height * 4" },
+        "support_interface_density": { "value": 30 },
+        "support_interface_pattern": { "value": "'grid'" },
+        "support_interface_skip_height": { "value": 0.2 }
+    }
+}
diff --git a/resources/definitions/hctech_hc300-m2h.def.json b/resources/definitions/hctech_hc300-m2h.def.json
new file mode 100644
index 0000000000..bffbc38b17
--- /dev/null
+++ b/resources/definitions/hctech_hc300-m2h.def.json
@@ -0,0 +1,122 @@
+{
+    "version": 2,
+    "name": "HCTECH HC300-M2H",
+    "inherits": "fdmprinter",
+    "metadata": {
+        "visible": true,
+        "author": "HCTECH",
+        "manufacturer": "HCTECH",
+        "file_formats": "text/x-gcode",
+        "platform": "hctech_hc300-m2h.3mf",
+        "has_variants": false,
+        "has_machine_quality": false,
+        "machine_extruder_trains": {
+            "0": "hctech_hc300-m2h_extruder_0",
+            "1": "hctech_hc300-m2h_extruder_1"
+        }
+    },
+
+    "overrides": {
+        "machine_head_with_fans_polygon": { "default_value": [
+            [-61, 86],
+            [-61, -37],
+            [85, -37],
+            [85, 86]
+        ] },
+        "machine_name": { "default_value": "HCTECH HC300-M2H" },
+        "machine_extruder_count": { "default_value": 2 },
+        "machine_heated_bed": { "default_value": true },
+        "machine_width": { "default_value": 300 },
+        "machine_depth": { "default_value": 300 },
+        "machine_height": { "default_value": 300 },
+        "machine_center_is_zero": { "default_value": false },
+        "retraction_amount": {
+            "default_value": 0.3,
+            "maximum_value_warning": 2.0
+        },
+        "retraction_speed": { "default_value": 35},
+        "retraction_hop_enabled": { "value": "False" },
+        "retraction_hop": { "value": 0.2 },
+        "retraction_combing": { "value": "'off' if retraction_hop_enabled else 'noskin'" },
+        "retraction_combing_max_distance": { "value": 30 },
+        "travel_avoid_other_parts": { "value": true },
+        "travel_avoid_supports": { "value": true },
+        "travel_retract_before_outer_wall": { "value": true },
+        
+        "retraction_enable": { "value": true },
+        "retraction_count_max": { "value": 100 },
+        "retraction_extrusion_window": { "value": 10 },
+        "retraction_min_travel": { "value": 1.5 },
+
+        "adhesion_type": { "default_value": "skirt" },
+        "gantry_height": { "value": "30" },
+        "speed_print": { "default_value": 60.0 } ,
+        "speed_infill": { "value": "speed_print" },
+        "speed_wall": { "value": "speed_print / 2" },
+        "speed_wall_0": { "value": "speed_wall" },
+        "speed_wall_x": { "value": "speed_wall" },
+        "speed_topbottom": { "value": "speed_print / 2" },
+        "speed_roofing": { "value": "speed_topbottom" },
+        "speed_travel": { "value": "150.0 if speed_print < 60 else 250.0 if speed_print > 100 else speed_print * 2.5" },
+        "speed_layer_0": { "value": 30.0 },
+        "speed_print_layer_0": { "value": "speed_layer_0" },
+        "speed_travel_layer_0": { "value": "100 if speed_layer_0 < 20 else 150 if speed_layer_0 > 30 else speed_layer_0 * 5" },
+        "speed_prime_tower": { "value": "speed_topbottom" },
+        "speed_support": { "value": "speed_wall_0" },
+        "speed_support_interface": { "value": "speed_topbottom" },
+        "speed_z_hop": { "value": 5 },
+        "machine_max_feedrate_x": { "value": 100 },
+        "machine_max_feedrate_y": { "value": 100 },
+        "machine_max_feedrate_z": { "value": 30 },
+        "machine_max_feedrate_e": { "value": 50 },
+        "machine_max_acceleration_x": { "default_value": 2000 },
+        "machine_max_acceleration_y": { "default_value": 2000 },
+        "machine_max_acceleration_z": { "default_value": 100 },
+        "machine_max_acceleration_e": { "default_value": 2000 },
+        "machine_max_jerk_xy": { "default_value": 5.0 },
+        "machine_max_jerk_z": { "default_value": 0.4 },
+        "machine_max_jerk_e": { "default_value": 5.0 },
+        "material_diameter": { "default_value": 1.75 },
+        "acceleration_print": { "value": 1000 },
+        "acceleration_travel": { "value": 1500 },
+        "machine_gcode_flavor": { "default_value": "RepRap (Marlin/Sprinter)" },
+        "machine_start_gcode": { "default_value": "G1 Z2 ;Raise Z\nG28 X Y ;Home XY\nT1 ;switch to right extruder\nG1 X5 Y325 F4000 ;Move to Start Position\nG92 E0 ;Reset Extruder\nG1 E20 F60 ;extrude\nM400\nG92 E0 ;Reset Extruder\nG1 E-2 F2700 ;Retract\nG92 E0 ;Reset Extruder\nG1 X150 F5000 ;Clean Nozzle\nG1 X5 ;Back to Start Position\nG1 X220\nG1 X5\nT0 ;switch to left extruder\nG1 X5 Y325 F4000 ;Move to Start Position\nG92 E0 ;Reset Extruder\nG1 E20 F60 ;extrude\nM400\nG92 E0 ;Reset Extruder\nG4 S15\nG1 E-2 F2700; Retract\nG92 E0 ;Reset Extruder\nG1 X150 F5000 ;Clean Nozzle\nG1 X5 ;Back to Start Position\nG1 X220\nG1 X5\nG28 Z ;home Z\nG29 ;Measure the bed\nM500 ;Store parameters\nG1 X0 Y300 F4000 ;Move to corner" },
+        "machine_end_gcode": { "default_value": "G91 ;Relative positioning\nG1 E-1 F2700 ;Retract a bit\nG1 Z1 E-1 F2400 ;Retract and raise Z\nG1 Z2 ;Raise Z\nG90 ;Absolute positioning\nG12 ;clean nozzle\nG1 X5 Y325 ;Return to Start Point\nM106 S0 ;Switch off part cooling fan\nM104 S0 ;turn off temperature\nM140 S0 ;turn off Heated Bed\nM84 X Y E ;Disable all steppers but Z\nM81 ;turn-off power" },
+        "wall_line_count": { "default_value": 3 },
+        "top_bottom_thickness": { "default_value": 1 },
+        "cool_fan_speed": { "default_value": 75 },
+        "cool_fan_full_at_height": { "value": "layer_height_0 + 2 * layer_height" },
+        "cool_fan_enabled": { "value": true },
+        "cool_min_layer_time": { "value": 10 },
+        "brim_replaces_support": { "value": false },
+        "skirt_gap": { "value": 2 },
+        "skirt_line_count": { "default_value": 3 },
+        "switch_extruder_retraction_amount": { "default_value": 2 },
+        "switch_extruder_retraction_speeds": { "default_value": 35 },
+        "prime_tower_enable": { "default_value": true },
+        "infill_pattern": { "default_value": "triangles" },
+        "initial_layer_line_width_factor": { "default_value": 120.0 },
+        "line_width": { "default_value": 0.38 },
+        "travel_avoid_distance": { "default_value": 1 },
+        "infill_overlap": { "value": 35.0 },
+        "skin_overlap": { "value": 10.0 },        
+        "support_angle": { "value": "math.floor(math.degrees(math.atan(line_width/2.0/layer_height)))" },
+        "support_pattern": { "value": "'zigzag'" },
+        "support_infill_rate": { "value": "0 if support_enable and support_structure == 'tree' else 20" },
+        "support_use_towers": { "value": false },
+        "support_xy_distance": { "value": "wall_line_width_0 * 2" },
+        "support_xy_distance_overhang": { "value": "wall_line_width_0" },
+        "support_z_distance": { "value": "layer_height if layer_height >= 0.16 else layer_height * 2" },
+        "support_top_distance": { "value":  "extruderValue(support_roof_extruder_nr if support_roof_enable else support_infill_extruder_nr, 'support_z_distance') + (layer_height if support_structure == 'tree' else 0)"},
+        "support_xy_overrides_z": { "value": "'xy_overrides_z'" },
+        "support_wall_count": { "value": 1 },
+        "support_brim_enable": { "value": true },
+        "support_brim_width": { "value": 4 },
+
+        "support_interface_enable": { "value": true },
+        "support_interface_height": { "value": "layer_height * 4" },
+        "support_interface_density": { "value": 30 },
+        "support_interface_pattern": { "value": "'grid'" },
+        "support_interface_skip_height": { "value": 0.2 }
+    }
+}
diff --git a/resources/definitions/hctech_hc300-m3.def.json b/resources/definitions/hctech_hc300-m3.def.json
new file mode 100644
index 0000000000..126213f0c2
--- /dev/null
+++ b/resources/definitions/hctech_hc300-m3.def.json
@@ -0,0 +1,121 @@
+{
+    "version": 2,
+    "name": "HCTECH HC300-M3",
+    "inherits": "fdmprinter",
+    "metadata": {
+        "visible": true,
+        "author": "HCTECH",
+        "manufacturer": "HCTECH",
+        "file_formats": "text/x-gcode",
+        "platform": "hctech_hc300-m3.3mf",
+        "has_variants": false,
+        "has_machine_quality": false,
+        "machine_extruder_trains": {
+            "0": "hctech_hc300-m3_extruder_0"
+        }
+    },
+
+    "overrides": {
+        "machine_head_with_fans_polygon": { "default_value": [
+            [-49, 36],
+            [-36, -29],
+            [36, -29],
+            [36, 49]
+        ] },
+        "machine_name": { "default_value": "HCTECH HC300-M3" },
+        "machine_extruder_count": { "default_value": 1 },
+        "machine_heated_bed": { "default_value": true },
+        "machine_width": { "default_value": 300 },
+        "machine_depth": { "default_value": 300 },
+        "machine_height": { "default_value": 300 },
+        "machine_center_is_zero": { "default_value": false },
+        "retraction_amount": {
+            "default_value": 6,
+            "maximum_value_warning": 15
+        },
+        "retraction_speed": { "default_value": 35},
+        "retraction_hop_enabled": { "value": "False" },
+        "retraction_hop": { "value": 0.2 },
+        "retraction_combing": { "value": "'off' if retraction_hop_enabled else 'noskin'" },
+        "retraction_combing_max_distance": { "value": 30 },
+        "travel_avoid_other_parts": { "value": true },
+        "travel_avoid_supports": { "value": true },
+        "travel_retract_before_outer_wall": { "value": true },
+        
+        "retraction_enable": { "value": true },
+        "retraction_count_max": { "value": 100 },
+        "retraction_extrusion_window": { "value": 10 },
+        "retraction_min_travel": { "value": 1.5 },
+
+        "adhesion_type": { "default_value": "skirt" },
+        "gantry_height": { "value": "30" },
+        "speed_print": { "default_value": 60.0 } ,
+        "speed_infill": { "value": "speed_print" },
+        "speed_wall": { "value": "speed_print / 2" },
+        "speed_wall_0": { "value": "speed_wall" },
+        "speed_wall_x": { "value": "speed_wall" },
+        "speed_topbottom": { "value": "speed_print / 2" },
+        "speed_roofing": { "value": "speed_topbottom" },
+        "speed_travel": { "value": "150.0 if speed_print < 60 else 250.0 if speed_print > 100 else speed_print * 2.5" },
+        "speed_layer_0": { "value": 30.0 },
+        "speed_print_layer_0": { "value": "speed_layer_0" },
+        "speed_travel_layer_0": { "value": "100 if speed_layer_0 < 20 else 150 if speed_layer_0 > 30 else speed_layer_0 * 5" },
+        "speed_prime_tower": { "value": "speed_topbottom" },
+        "speed_support": { "value": "speed_wall_0" },
+        "speed_support_interface": { "value": "speed_topbottom" },
+        "speed_z_hop": { "value": 5 },
+        "machine_max_feedrate_x": { "value": 100 },
+        "machine_max_feedrate_y": { "value": 100 },
+        "machine_max_feedrate_z": { "value": 30 },
+        "machine_max_feedrate_e": { "value": 50 },
+        "machine_max_acceleration_x": { "default_value": 1000 },
+        "machine_max_acceleration_y": { "default_value": 1000 },
+        "machine_max_acceleration_z": { "default_value": 100 },
+        "machine_max_acceleration_e": { "default_value": 1000 },
+        "machine_max_jerk_xy": { "default_value": 5.0 },
+        "machine_max_jerk_z": { "default_value": 0.4 },
+        "machine_max_jerk_e": { "default_value": 5.0 },
+        "material_diameter": { "default_value": 1.75 },
+        "acceleration_print": { "value": 500 },
+        "acceleration_travel": { "value": 1000 },
+        "machine_gcode_flavor": { "default_value": "RepRap (Marlin/Sprinter)" },
+        "machine_start_gcode": { "default_value": "G1 Z2 ;Raise Z\nG28 X Y ;Home XY\nG92 E0 ;Reset Extruder\nG1 E-1 F2400 ;Retract\nG92 E0 ;Reset Extruder\nG1 X315 Y70 F3000 ;clean nozzle\nG1 X330 Y150 F5000\nG1 X315 Y70\nG1 E-1 F2400 ;Retract\nG92 E0 ;Reset Extruder\nG28 Z ;home Z\nG1 X300 Y150\nG12\nG29 ;Measure the bed\nM500 ;Store parameters" },
+        "machine_end_gcode": { "default_value": "G91 ;Relative positioning\nG1 E-1 F2700 ;Retract a bit\nG1 Z1 E-1 F2400 ;Retract and raise Z\nG1 Z2 ;Raise Z\nG90 ;Absolute positioning\nG12 ;clean nozzle\nG1 X5 Y300 ;Return to Start Point\nM106 S0 ;Switch off part cooling fan\nM104 S0 ;turn off temperature\nM140 S0 ;turn off Heated Bed\nM84 X Y E ;Disable all steppers but Z\nM81 ;turn-off power" },
+        "wall_line_count": { "default_value": 3 },
+        "top_bottom_thickness": { "default_value": 1 },
+        "cool_fan_speed": { "default_value": 75 },
+        "cool_fan_full_at_height": { "value": "layer_height_0 + 2 * layer_height" },
+        "cool_fan_enabled": { "value": true },
+        "cool_min_layer_time": { "value": 10 },
+        "brim_replaces_support": { "value": false },
+        "skirt_gap": { "value": 2 },
+        "skirt_line_count": { "default_value": 3 },
+        "switch_extruder_retraction_amount": { "default_value": 2 },
+        "switch_extruder_retraction_speeds": { "default_value": 35 },
+        "prime_tower_enable": { "default_value": true },
+        "infill_pattern": { "default_value": "triangles" },
+        "initial_layer_line_width_factor": { "default_value": 120.0 },
+        "line_width": { "default_value": 0.38 },
+        "travel_avoid_distance": { "default_value": 1 },
+        "infill_overlap": { "value": 35.0 },
+        "skin_overlap": { "value": 10.0 },        
+        "support_angle": { "value": "math.floor(math.degrees(math.atan(line_width/2.0/layer_height)))" },
+        "support_pattern": { "value": "'zigzag'" },
+        "support_infill_rate": { "value": "0 if support_enable and support_structure == 'tree' else 20" },
+        "support_use_towers": { "value": false },
+        "support_xy_distance": { "value": "wall_line_width_0 * 2" },
+        "support_xy_distance_overhang": { "value": "wall_line_width_0" },
+        "support_z_distance": { "value": "layer_height if layer_height >= 0.16 else layer_height * 2" },
+        "support_top_distance": { "value":  "extruderValue(support_roof_extruder_nr if support_roof_enable else support_infill_extruder_nr, 'support_z_distance') + (layer_height if support_structure == 'tree' else 0)"},
+        "support_xy_overrides_z": { "value": "'xy_overrides_z'" },
+        "support_wall_count": { "value": 1 },
+        "support_brim_enable": { "value": true },
+        "support_brim_width": { "value": 4 },
+
+        "support_interface_enable": { "value": true },
+        "support_interface_height": { "value": "layer_height * 4" },
+        "support_interface_density": { "value": 30 },
+        "support_interface_pattern": { "value": "'grid'" },
+        "support_interface_skip_height": { "value": 0.2 }
+    }
+}
diff --git a/resources/extruders/hctech_hc300-m1&m1h_extruder_0.def.json b/resources/extruders/hctech_hc300-m1&m1h_extruder_0.def.json
new file mode 100644
index 0000000000..fb45cbfc21
--- /dev/null
+++ b/resources/extruders/hctech_hc300-m1&m1h_extruder_0.def.json
@@ -0,0 +1,15 @@
+{
+    "version": 2,
+    "name": "Extruder 1",
+    "inherits": "fdmextruder",
+    "metadata": {
+        "machine": "HCTECH_HC300-M1&M1H",
+        "position": "0"
+    },
+
+    "overrides": {
+        "extruder_nr": { "default_value": 0 },
+        "material_diameter": { "default_value": 1.75 },
+        "machine_nozzle_size": { "default_value": 0.4 }
+    }
+}
diff --git a/resources/extruders/hctech_hc300-m2h_extruder_0.def.json b/resources/extruders/hctech_hc300-m2h_extruder_0.def.json
new file mode 100644
index 0000000000..49de3f449c
--- /dev/null
+++ b/resources/extruders/hctech_hc300-m2h_extruder_0.def.json
@@ -0,0 +1,27 @@
+{
+    "version": 2,
+    "name": "Left Extruder",
+    "inherits": "fdmextruder",
+    "metadata": {
+        "machine": "HCTECH_HC300-M2H",
+        "position": "0"
+    },
+
+    "overrides": {
+        "extruder_nr": {
+            "default_value": 0,
+            "maximum_value": "1"
+        },
+        "machine_nozzle_offset_x": { "default_value": 0.0 },
+        "machine_nozzle_offset_y": { "default_value": 0.0 },
+        "material_diameter": { "default_value": 1.75 },
+        "machine_nozzle_size": { "default_value": 0.4 },
+        "machine_extruder_start_code": {
+            "default_value": "\nT0 ;switch to extruder 1\nM109 S{material_print_temperature}\nG1 F5000\nG12 ;clean nozzle\nG1 X0 Y300 F4800 ;move to start point"
+        },
+        "machine_extruder_end_code": {
+            "default_value": "\nG92 E0 ;reset extruder distance\nG1 F800 E-1 ;retract\nG92 E0 ;reset extruder distance\nG1 X0 Y300 F4800 ;move to start point\nG1 X5 Y325"
+        },
+        "machine_extruder_cooling_fan_number": { "default_value": 0 }
+    }
+}
diff --git a/resources/extruders/hctech_hc300-m2h_extruder_1.def.json b/resources/extruders/hctech_hc300-m2h_extruder_1.def.json
new file mode 100644
index 0000000000..023cd3d78d
--- /dev/null
+++ b/resources/extruders/hctech_hc300-m2h_extruder_1.def.json
@@ -0,0 +1,27 @@
+{
+    "version": 2,
+    "name": "Right Extruder",
+    "inherits": "fdmextruder",
+    "metadata": {
+        "machine": "HCTECH_HC300-M2H",
+        "position": "1"
+    },
+
+    "overrides": {
+        "extruder_nr": {
+            "default_value": 1,
+            "maximum_value": "1"
+        },
+        "machine_nozzle_offset_x": { "default_value": 0.0 },
+        "machine_nozzle_offset_y": { "default_value": 0.0 },
+        "material_diameter": { "default_value": 1.75 },
+        "machine_nozzle_size": { "default_value": 0.4 },
+        "machine_extruder_start_code": {
+            "default_value": "\nT1 ;switch to extruder 2\nM109 S{material_print_temperature}\nG1 F5000\nG12 ;clean nozzle\nG1 X0 Y300 F4800 ;move to start point"
+        },
+        "machine_extruder_end_code": {
+            "default_value": "\nG92 E0 ;reset extruder distance\nG1 F800 E-1 ;retract\nG92 E0 ;reset extruder distance\nG1 X0 Y300 F4800 ;move to start point\nG1 X5 Y325"
+        },
+        "machine_extruder_cooling_fan_number": { "default_value": 0 }
+    }
+}
diff --git a/resources/extruders/hctech_hc300-m3_extruder_0.def.json b/resources/extruders/hctech_hc300-m3_extruder_0.def.json
new file mode 100644
index 0000000000..ee1eed7da2
--- /dev/null
+++ b/resources/extruders/hctech_hc300-m3_extruder_0.def.json
@@ -0,0 +1,15 @@
+{
+    "version": 2,
+    "name": "Extruder 1",
+    "inherits": "fdmextruder",
+    "metadata": {
+        "machine": "HCTECH_HC300-M3",
+        "position": "0"
+    },
+
+    "overrides": {
+        "extruder_nr": { "default_value": 0 },
+        "material_diameter": { "default_value": 1.75 },
+        "machine_nozzle_size": { "default_value": 0.4 }
+    }
+}
diff --git a/resources/meshes/hctech_hc300-m1&m1h.3mf b/resources/meshes/hctech_hc300-m1&m1h.3mf
new file mode 100644
index 0000000000..84ae00339f
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diff --git a/resources/meshes/hctech_hc300-m2h.3mf b/resources/meshes/hctech_hc300-m2h.3mf
new file mode 100644
index 0000000000..002dd272bf
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diff --git a/resources/meshes/hctech_hc300-m3.3mf b/resources/meshes/hctech_hc300-m3.3mf
new file mode 100644
index 0000000000..58bf6fc2b0
Binary files /dev/null and b/resources/meshes/hctech_hc300-m3.3mf differ