Product Features
(1) A full control panel with power indicator lights and oil lamps.
(2) Emergency shutdown for low oil pressure and high water temperature.
(3) The large fuel tank is convenient for long-term use.
(4) High strength chassis, low vibration, stable operation.
(5) Fully enclosed noise reduction system.
(6) Advanced waterproof and dustproof design.
(7) High quality steel and spraying technology.
(8) Easy to install and maintain.
(9) 50 Hz and 60 Hz are available for selection.
Product Applications
1. Emergency Power Supply. Diesel generators are widely used as backup power sources in case of power outages. They ensure that critical systems and operations continue to run, especially in hospitals, data centers, and industrial facilities.
2. Primary Power Source. In remote areas where grid access is limited or unavailable, diesel generators can be used as the primary power source to provide continuous power.
3. Backup power. Many facilities use diesel generators as standby power, which automatically start up in the event of a power grid failure, providing uninterrupted power.
4. Portable Power. Diesel generators are often used in construction sites, outdoor events, and other temporary locations where electrical power is required but not readily available.
5. Industrial Applications. In industries such as mining, oil and gas, and agriculture, diesel generator sets provide necessary power to equipment and machinery in off-grid locations
Standard Configurations
1. Engine. Powered by brand new original WEICHAI water cooled diesel engine.
2. Alternator. Copper brushless AC synchronous alternator 3 phase with IP23 and H insulation class.
3. Cooling System. Suitable for environments of 40°C-50°C radiator water tank, belt driven cooling fan with safety cover.
4. Control System. DELIXI or CHINT brand power generation output air switch, standard control panel with SmartGen brand AMF controller module for automatic start and stop, supports eight languages worldwide, 12/24V DC electric start system with battery charger.
5. Base Frame. Heavy duty steel base frame ensures that strong and durable, with coat painting to prevent corrosion.
6. Filtration System. Dry air filter, fuel filter, lubricating oil filter.
7. Short Circuit Protection. Moulded case circuit breaker.
8. Specialized muffler exhaust system with flexible connectors and bellows.
9. Original technical documents of the engine and alternator, generator set manual, test report, etc.
10. ISO9001 approved.
Components of Diesel Generator Set: 1. YUCHAI Diesel Engine; 2.YUCHAI Alternator; 3. Controller |
Generator Set Parameters |
Generator Set Model |
GRY50 |
Rated Power |
50kW |
Rated Capacity |
62.5kVA |
Rated Current |
90A |
Rated Voltage |
400V/230V (Can be customized for different voltages) |
Rated Frequency |
50Hz |
Rated Speed |
1500rpm |
Power Factor |
0.8 (Lagging) |
Fuel Consumption at 100% Load |
≤205g/kW.h |
Speed Governor |
Electronic |
Noise (LP7M) |
≤110dB (Within 7 meters) |
Overall Size |
1850*700*1200 mm |
Gross Weight |
868kg |
Engine Parameters |
Engine Brand |
YUCHAI |
Prime Power |
60kW |
Standby Power |
66kW |
Rated Speed |
1500rpm |
Starting Mode |
24V DC Electric start |
Number of Cylinders |
12 Cylinders V-shaped |
Stroke |
4 Stroke |
Bore x Stroke |
108x115mm |
Total Displacement |
4.21L |
Intake Mode |
Turbocharged after cooled |
Speed Regulation |
Electronic |
Fuel Consumption at 100% Load |
≤200g/kW.h |
Coolant Volume |
24L |
Lubricating Oil Capacity |
13L |
Cooling Mode |
Water cooled |
Fuel Type |
Diesel |
Emission Standards |
CN Stage 2 |
Alternator Parameters |
Alternator Brand |
YUCHAI |
Rated Power |
62.5kVA |
Rated Voltage |
400V/230V |
Rated Frequency |
50Hz |
Rated Current |
90A |
Rated Speed |
1500rpm |
Number of Phase |
AC 3 Phase |
Connecting Type |
3 Phase 4 Wire Y Series |
Number of Bearing |
Single |
Voltage Regulating Mode |
Automatic voltage regulation (AVR) |
Winding Material |
100% Copper |
Insulation Grade |
H |
Protection Class |
IP23 |
Exciter Type |
Self excitation, brushless with AVR |
Controller |
Modules Brand |
SmartGen |
Model |
HGM6110N |
Working Power Range |
DC8-35V |
Working Temperature |
-25~70ºC |
Display |
Multilingual LCD |
Screen Material |
Acrylic, Silica-gel panel and keys |
Function |
Automatic start module, it controls generator to start/stop by remote start signal. For gens, genset has functions of over/under voltage, over/under frequency, over current and over power. |
Language Interface |
Chinese, English, Spanish, Russian, Portuguese, Turkey, Polish and French |
IP Rating |
IP65 |
Working Mode |
Auto/Stop/Manual |
Alarm Protection |
Warning/Shutdown |
Detailed Photos
Silent Diesel generator set advantages
1. Low Noise. This is the most significant feature of the silent generator. It reduces noise generation and transmission through the use of soundproof materials, sealing design and special noise reduction technology.
2. Compact Structure. Silent diesel generator sets are usually compact in design, easy to install and move.
3. Efficient Performance. Even use of noise reduction measures, this type of generator set usually still maintains efficient power output.
4. Durable. Silent generator sets usually use high quality materials and components to ensure its reliability and durability in harsh environments.
5. Easy to Maintain. These generator sets are usually designed with ease of maintenance in mind, making regular inspection and maintenance work easier.
6. Environmental Protection. Due to lower noise levels, silent generators are more environmentally friendly, suitable for areas with more stringent noise restrictions.
7. Multifunctionality. Silent diesel generator sets can not only be used in home, commercial and industrial environments, but also for field working and emergency rescue.
8. Temperature Adaptability. Some silent generator sets are designed with temperature control devices, which can operate stably at different ambient temperatures.
9. Intelligent Control. Modern silent diesel generator sets are usually equipped with intelligent control systems, which can realize remote monitoring and fault diagnosis.
10. Energy Saving. Silent generator sets have a relatively low fuel consumption rate, which helps to save energy.
It can be used as the main power source and run continuously to provide uninterrupted power supply for various civil and industrial power equipment. The main components are selected from top international brands with high reliability, safe and stable performance. The intelligent parallel control system can perform parallel operation of multiple units to meet the power demand of larger loads.
The advanced waterproof and dustproof design adopts a labyrinth type air duct structure and a dustproof net design, while adding sealing strips and applying sealant to balance the different needs of ventilation and waterproof and dustproof. Meanwhile, it has been repeatedly tested in rain and dustproof tests, the highest can reach the protection level IP54.
High quality steel is used for the cabinet and surface spray treatment, corrosion resistance, scratch resistance, rust resistance, it can meet the C4, 05-1 and C5M class anticorrosion requirements according to different use environments, the surface treatment process of the diesel genset has passed the 1500 hours salt spray test.
Radiator and high voltage parts are isolated and protected to avoid accidents caused by touching, there are emergency stop buttons inside and outside of the cabinet for convenience and safety, and the negative battery switch on and off DC control power supply, and it has a lockable fuel cover.
Through the three dimensional construction analysis simulation software on the generator set load bearing and vibration calculations and long time running tests, effectively reduce the genset running vibration, to ensure stable and reliable working.
The fully enclosed noise reduction system, advanced product design and manufacturing process to ensure better stability of the engine, thereby getting the lower body noise and exhaust noise, in addition to use of sealing rubber around the door, the concept of noise reduction is also fully integrated into the entire intake and exhaust system and all other components.
Here are several key features of silent diesel generator sets conponents:
1. Galvanized sheet steel cabinet, corrosion and fire resistant with abrasion and tear resistance function.
2. High strength base, low vibration, stable work.
3. Forklift lifting holes and top lifting lug for easy transportation.
4. Large capacity base fuel tank for long time use.
5. External fuel filler for easy to refuel.
6. Air inlet, make sure there's enough air in.
7. External coolant filler for easy injection.
8. Full featured control system to meet different types of customer needs.
9. Exhaust with rain cap to protect the genset.
10. External emergency stop button, its primary function is to immediately shut down or stop working of a machine or system in an emergency situation to prevent damage to equipment.
Product Optional
Product Parameters
Specification Sheet for Generator Sets Powered byYUCHAI Engine
1500rpm, 3 Phase 4 Wire, 400V/230V 50Hz, PF=0.8, Emission Standards CN Stage 2 |
Genset Technical Parameters |
Engine Technical Parameters |
Generator Set Model |
Prime Power |
Standby Power |
Unit size L×W×H |
Weight |
Engine type |
Cylinder count/alignment |
Cylinder bore |
Itinerary |
Displace
ment |
Fuel consumption rate |
Lube Oil capacity |
Total coolant capacity |
KW |
KVA |
KW |
KVA |
mm |
KG |
mm |
mm |
L |
g/kw.h |
L |
L |
GRY20 |
20 |
25 |
22 |
27.5 |
1650×650×1150 |
700 |
YCD4V12D-35 |
4/L |
89 |
100 |
2.5 |
209 |
6.5 |
10.2 |
GRY30 |
30 |
37.5 |
32 |
40 |
1750X700×1150 |
720 |
YCD4V22D-55 |
4/L |
89 |
100 |
2.5 |
209 |
6.5 |
10.2 |
GRY30 |
30 |
37.5 |
32 |
40 |
1850×700×1200 |
850 |
YC4D60-D25 |
4/L |
108 |
115 |
4.21 |
205 |
11 |
22 |
GRY50 |
50 |
62.5 |
55 |
68.75 |
1850×700×1200 |
868 |
YC4D90Z-D25 |
4/L |
108 |
115 |
4.21 |
200 |
13 |
24 |
GRY60 |
60 |
75 |
64 |
80 |
2000×800×1200 |
950 |
YC4A100Z-D25 |
4/L |
108 |
132 |
4.84 |
200 |
13 |
26 |
GRY80 |
80 |
100 |
88 |
110 |
2020×830×1200 |
1000 |
YC4A140L-D25 |
4/L |
108 |
132 |
4.84 |
215 |
13 |
26 |
GRY100 |
100 |
125 |
110 |
137.5 |
2100×880×1268 |
1100 |
YC4A180L-D20 |
4/L |
108 |
132 |
4.84 |
210 |
13 |
31 |
GRY100 |
100 |
125 |
110 |
137.5 |
2500×900×1400 |
1430 |
YC6B180L-D20 |
6/L |
108 |
125 |
6.87 |
200 |
17 |
45 |
GRY120 |
120 |
150 |
132 |
165 |
2500×900×1400 |
1480 |
YC6B205L-D20 |
6/L |
108 |
125 |
6.87 |
200 |
17 |
45 |
GRY150 |
150 |
187.5 |
160 |
200 |
2500×850×1450 |
1550 |
YC6A245L-D21 |
6/L |
108 |
132 |
7.25 |
192 |
22 |
55 |
GRY200 |
200 |
250 |
220 |
275 |
2900×1100×1660 |
2050 |
YC6MK350L-D20 |
6/L |
123 |
145 |
10.3 |
195 |
28 |
65 |
GRY250 |
250 |
312.5 |
275 |
343.75 |
2930×1100×1750 |
2200 |
YC6MK420L-D20 |
6/L |
123 |
145 |
10.3 |
195 |
28 |
65 |
GRY300 |
300 |
375 |
330 |
412.5 |
2930×1100×1750 |
2300 |
YC6MJ500L-D21 |
6/L |
131 |
145 |
11.7 |
195 |
33 |
62 |
GRY360 |
360 |
450 |
400 |
500 |
3520×1230×1800 |
3735 |
YC6T600L-D22 |
6/L |
145 |
165 |
16.3 |
195 |
52 |
89 |
GRY400 |
400 |
500 |
440 |
550 |
3520×1230×1800 |
3750 |
YC6T660L-D20 |
6/L |
145 |
165 |
16.3 |
195 |
52 |
89 |
Specification Sheet for Generator Sets Powered byYUCHAI Engine
1500rpm, 3 Phase 4 Wire, 400V/230V 50Hz, PF=0.8, Emission Standards CN Stage 3 |
GRY16 |
16 |
20 |
18 |
22.5 |
1650×730×1268 |
455 |
YCDV254FHZ-25 |
4/L |
89 |
100 |
2.5 |
220 |
8 |
13 |
GRY20 |
20 |
25 |
22 |
27.5 |
1650×730×1268 |
455 |
YCDV254FHZ-35 |
4/L |
89 |
100 |
2.5 |
207 |
8 |
13 |
GRY24 |
24 |
30 |
26 |
32.5 |
1650×730×1268 |
455 |
YCDV254FHZ-40 |
4/L |
89 |
100 |
2.5 |
199 |
8 |
13 |
GRY30 |
30 |
37.5 |
33 |
41.25 |
1650×730×1268 |
455 |
YCDV254FHZ-50 |
4/L |
89 |
100 |
2.5 |
228 |
8 |
13 |
GRY40 |
40 |
50 |
44 |
55 |
1850×775×1332 |
600 |
YCD4V33H6-75 |
4/L |
89 |
100 |
2.5 |
202 |
8 |
13 |
GRY50 |
50 |
62.5 |
551 |
688.75 |
1850×775×1332 |
963 |
YC4D90-D34 |
4/L |
102 |
118 |
3.86 |
237 |
13 |
30 |
GRY60 |
60 |
75 |
66 |
82.5 |
1850×790×1464 |
1013 |
YC4D105-D34 |
4/L |
110 |
125 |
4.75 |
234 |
13 |
34 |
GRY80 |
80 |
100 |
88 |
110 |
1853×787×1465 |
1344 |
YC4D140-D31 |
4/L |
110 |
125 |
4.75 |
225 |
13 |
41 |
GRY90 |
90 |
112.5 |
100 |
125 |
2350×1022×1493 |
1360 |
YC4D155-D31 |
4/L |
108 |
115 |
4.21 |
224 |
13 |
44 |
GRY110 |
110 |
137.5 |
120 |
150 |
2488×1025×1505 |
1425 |
YC4A190-D30 |
4/L |
108 |
132 |
4.84 |
213 |
17 |
42 |
GRY120 |
120 |
150 |
132 |
165 |
2488×1025×1505 |
1425 |
YC6A205-D30 |
6/L |
108 |
132 |
7.255 |
214 |
24 |
63 |
GRY140 |
140 |
175 |
154 |
192.5 |
2500×1102×1562 |
1748 |
YC6A230-D30 |
6/L |
108 |
132 |
7.255 |
214 |
24 |
68 |
GRY144 |
144 |
180 |
160 |
200 |
2500×1102×1562 |
1748 |
YC6A245-D30 |
6/L |
108 |
132 |
7.255 |
211 |
24 |
68 |
GRY150 |
150 |
187.5 |
165 |
206.25 |
2500×1102×1562 |
1700 |
YCD6Q33H6-260 |
6/L |
108 |
135 |
7.5 |
205 |
21 |
68 |
GRY160 |
160 |
200 |
176 |
220 |
2500×1202×1556 |
1810 |
YC6A275-D30 |
6/L |
108 |
132 |
7.255 |
213 |
24 |
68 |
GRY200 |
200 |
250 |
220 |
275 |
3025×1260×1720 |
1915 |
YCA08350-D30 |
6/L |
110 |
132 |
7.527 |
199 |
24 |
65 |
GRY200 |
200 |
250 |
220 |
275 |
3025×1260×1720 |
1915 |
YC6MK350-D30 |
6/L |
123 |
145 |
10.34 |
204 |
30 |
65 |
GRY250 |
250 |
312.5 |
275 |
343.75 |
3025×1260×1720 |
2735 |
YC6MK420-D30 |
6/L |
123 |
145 |
10.34 |
203 |
30 |
65 |
GRY280 |
280 |
350 |
3081 |
3851.25 |
3000×1205×1744 |
2735 |
YC6MK450-D30 |
6/L |
123 |
145 |
10.34 |
201 |
30 |
65 |
GRY300 |
300 |
375 |
330 |
412.5 |
3065×1280×1688 |
2812 |
YC6MJ500-D30 |
6/L |
131 |
145 |
11.73 |
205 |
30 |
65 |
GRY320 |
320 |
400 |
350 |
437.5 |
3300×1360×1793 |
3663 |
YC6MJ540-D30 |
6/L |
131 |
145 |
11.73 |
201 |
37 |
86 |
GRY320 |
320 |
400 |
350 |
437.5 |
3300×1360×1793 |
3663 |
YC6K520-D30 |
6/L |
129 |
155 |
12.16 |
201 |
34 |
103 |
GRY360 |
360 |
450 |
400 |
500 |
3360×1360×1793 |
3594 |
YC6MJ600-D30 |
6/L |
131 |
145 |
11.73 |
203 |
37 |
86 |
GRY360 |
360 |
450 |
400 |
500 |
3360×1360×1793 |
3594 |
YC6K600-D30 |
6/L |
129 |
165 |
12.94 |
210 |
34 |
103 |
GRY400 |
400 |
500 |
440 |
550 |
3380×1360×1793 |
3650 |
YC6K660-D30 |
6/L |
129 |
165 |
12.94 |
195 |
34 |
110 |
GRY450 |
450 |
562.5 |
500 |
625 |
3500×1456×1926 |
4278 |
YC6TD780-D31 |
6/L |
152 |
180 |
19.6 |
220 |
55 |
140 |
GRY500 |
500 |
625 |
550 |
687.5 |
3500×1456×1926 |
5230 |
YC6TD840-D31 |
6/L |
152 |
180 |
19.61 |
215 |
55 |
140 |
GRY550 |
550 |
687.5 |
600 |
750 |
3500×1456×1926 |
5230 |
YC6TD900-D31 |
6/L |
152 |
180 |
19.6 |
213 |
55 |
140 |
GRY600 |
600 |
750 |
660 |
825 |
4158×1670×2604 |
5400 |
YC6TD1000-D30 |
6/L |
152 |
180 |
19.6 |
208 |
55 |
160 |
GRY650 |
650 |
812.5 |
710 |
887.5 |
3900×1670×2204 |
9500 |
YC6TH1070-D31 |
6/L |
175 |
195 |
28.14 |
207 |
113 |
220 |
GRY730 |
730 |
912.5 |
800 |
1000 |
3915×1770×2228 |
9600 |
YC6TH1220-D31 |
6/L |
175 |
195 |
28.14 |
206 |
113 |
220 |
GRY800 |
800 |
1000 |
880 |
1100 |
3915×1770×2228 |
9800 |
YC6TH1320-D31 |
6/L |
175 |
195 |
28.14 |
207 |
113 |
220 |
GRY900 |
900 |
1125 |
1000 |
1250 |
4550×2160×2541 |
12100 |
YC6C1520-D31 |
6/L |
200 |
210 |
39.58 |
208 |
160 |
274 |
GRY1000 |
1000 |
1250 |
1100 |
1375 |
4550×2160×2541 |
12100 |
YC6C1660-D30 |
6/L |
200 |
210 |
39.58 |
208 |
160 |
274 |
GRY1000 |
1000 |
1250 |
1100 |
1375 |
4550×2160×2550 |
12100 |
YC6C1660-D31 |
6/L |
200 |
210 |
39.58 |
208 |
160 |
274 |
GRY1100 |
1100 |
1375 |
1200 |
1500 |
4800×2100×2528 |
13500 |
YC12VTD1830-D30 |
12/V |
152 |
180 |
39.2 |
209 |
210 |
340 |
GRY1200 |
1200 |
1500 |
1320 |
1650 |
4800×2100×2528 |
13500 |
YC12VTD2000-D30 |
12/V |
152 |
180 |
39.2 |
210 |
210 |
365 |
GRY1350 |
1350 |
1687.5 |
1500 |
1875 |
5578×2615×2909 |
16000 |
YC12VC2270-D31 |
12/V |
200 |
210 |
79.17 |
204 |
370 |
650 |
GRY1500 |
1500 |
1875 |
1600 |
2000 |
5400×2615×2909 |
13000 |
YC16VTD2510-D30 |
16/V |
200 |
210 |
52.26 |
205 |
310 |
550 |
GRY1700 |
1700 |
2125 |
1800 |
2250 |
6030×2615×2909 |
16000 |
YC12VC2700-D31 |
12/V |
200 |
210 |
79.17 |
204 |
370 |
700 |
GRY1800 |
1800 |
2250 |
2000 |
2500 |
6500×2615×3250 |
19000 |
YC12VC3000-D30 |
12/V |
200 |
210 |
79.17 |
211 |
370 |
755 |
GRY2000 |
2000 |
2500 |
2200 |
2750 |
7500×2615×3250 |
22000 |
YC16VC3300-D31 |
16/V |
200 |
210 |
105.56 |
206 |
430 |
650 |
GRY2200 |
2200 |
2750 |
2400 |
3000 |
7700×2615×3250 |
22500 |
YC16VC3600-D31 |
16/V |
200 |
210 |
105.56 |
207 |
430 |
650 |
GRY2400 |
2400 |
3000 |
2600 |
3250 |
7880×2615×3250 |
23500 |
YC16VC4000-D31 |
16/V |
200 |
210 |
105.56 |
211 |
430 |
840 |
Note: As the product will be continuously upgraded, product appearance, size, weight and other parameters are subject to the actual product, please consult the salesperson for details.
Company Profile
Guangdong Gerui Power Technology Co.,Ltd is a professional manufacturer located in Foshan City, China, established on 2012, focus on Diesel generator set power 7KW-3000KW, silent generator set, automatic generating set power 7KW-1000KW, portable trailer diesel generator set power 10-500KW, vehicle-mounted power station 7KW-600KW.
Type: Open type diesel generator set, silent type diesel generator set, mobile trailer type generator set, automatic generating set and vehicle mounted type generator set.
Engine Brand: WEICHAI, YUCHAI, SHANGCHAI, SHANGYAN, MTU, SME, etc.
The alternator brand uses LEROY SOMER, MARATHON, ENGE, GERALL brushless synchronous generator, and with salient pole integral rotor technology, H-class insulators, steel plate body, excellent performance, stable and reliable operation.
The controller uses a multifunctional intelligent control module for diesel generator sets, Chinese and English operation interface, with automatic control, manual control and various parameter display and protection functions.
Production processing
Our diesel generator set production workshop is a specialized facility where we manufacture a wide range of diesel generator sets. With advanced equipment and skilled workers, we ensure high quality production and efficient work procedure.
In this workshop, we produce diesel generator sets with various power outputs, from 7KW to 3000KW. Our products are mainly powered by well-known brands such as YUCHAI, WEICHAI, SHANGCHAI, MTU, SHANGYAN diesel engine company. These generator sets applications in industries such as telecommunications, construction, mining, and emergency power supply.
With years of experience in the industry, we have gained a reputation for reliable and high-quality diesel generator sets. Our production workshop is committed to providing customers with excellent products and services, and we strive to become a leading manufacturer in the global diesel generator set market.
Company Cases
Diesel generators are widely used in animal husbandry, shipping transportation, steamship, garbage disposal, water conservancy and hydropower, factory backup, outdoor welding, metallurgy mining, cold storage, municipal engineering, civil air defense projects, flood control and drought relief, highways, railway, hotels and guesthouses, real estate, data, communications industry, fire backup and other industries.
Certifications
To ensure the quality of our diesel generator sets, we requiring strictly and carefully testing at each stage of production. All products have passed ISO9001:2015, ISO14001:2015, ISO45001:2018 certification. We also have a professional research and development team that continuously improves our product design and develops new models to meet market demands.
Why choose us?
On-Line gensent running test before shipment Servicing more than 80 countries and regions.
100% quality guarantee with free parts replacement.
Everything can be tailored to meet your specific requirements.
Professional service team for installation and maintenance service.
FAQ
1.How is your Package?
Plastic (free of charge) or wooden case with steel plate ( charge will be decided according to the outer silent diesel generator canopy size )
2.How is your Payment?
By 30% T/T as deposit, 70% balance should be paid 10 days before shipment or100% L/C at sight.
3.How is your Delivery?
About 7-15 days after we get the deposite.
4.How is your Warranty?
The goods manufactured by GERALLY Generator CO.,Ltd are under warranty within1 year from the date of delivery.lf the damageable spare parts of genset are caused by incorrect man-made operation and beyond the defects liability period, we will not assume the warranty responsibility.
5.Do you arrange shipment for the products?
For FOB or CIF price, we will arrange shipment for you. For EXW price, clients need to arrange shipment by themselves or their agents. The cheapest way is by sea but takes a long time, you can use your shipping forward agent to pick up the products from our factory, or we can deliver the products to the port. We shall not be responsible for any import taxes, clearance cost, port charges, etc.
6: How about guarantee and after-sales service?
The products guarantee is 12 months or 1000 working hours warranty for all our products.
7: How do I install the products?
There is a video to show you how to use our products, when delivery we enclose English operate manually to you. If you glad to visit our factory, free training of install use and maintenance of products.
8: Are you a manufacturer?
Yes, we are a manufacturer, both OEM and ODM, and we have our design team, sales team, and factory.