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- 01
Do you have experience with overseas projects?
Yes. Zhongtongfu is a key participant in China's Belt and Road EPC projects, having successfully delivered numerous overseas projects including the TIDC Data Center in Thailand (the largest single project delivered locally) and the 1.2 MWp + 2 MWh integrated solar-storage project in Zambia. Its business spans over ten countries and regions across Asia, Africa, Europe, and the CIS countries.
- 02
What is the background of Zhongtongfu (CCS)?
Zhongtongfu is the abbreviation for China Communication Services Co., Ltd., a listed state-owned enterprise in China with an AAA credit rating and recognized as a high-tech enterprise. Zhongtongfu is the designated centralized procurement supplier for China Telecom, China Mobile, China Unicom, China Tower, and China West Electric, with business coverage spanning over 30 provinces, municipalities, and autonomous regions across China as well as more than ten countries worldwide. It holds management system certifications including ISO9001, ISO14001, and OHSAS18001.
- 03
How long has your company been in operation? What is its position within the industry?
Zhonghui Runchi has been dedicated to the export of complete low-voltage distribution cabinets for many years. Leveraging Zhongtongfu's decades of technical expertise and engineering experience in electrical equipment manufacturing, the company has supplied distribution solutions to projects across numerous countries and regions worldwide. Zhongtongfu has received prestigious national awards including the National Spark Award and the Science and Technology Progress Award.
- 04
Do you only specialize in exporting distribution cabinets? Please describe your product line？
In addition to low-voltage distribution cabinets (including the MDmaxS, MNS, MNS2.0, BLOKSET, GGD, GCK, GCS series), we also offer power distribution panel cabinets (DPFOX series), intelligent AC/DC distribution busways (Busway series), DC/AC power modules, and a comprehensive range of components—including frame breakers, molded case circuit breakers, automatic transfer switches (ATS), contactors, thermal relays, capacitors, reactors, surge protectors (SPD), and multifunctional instruments—covering the entire product portfolio from high-voltage incoming lines to end-user distribution systems.
- 05
What certifications can you provide?
We hold internationally recognized mainstream certifications such as CCC (China), CE (European Union), UL (North America), CB (International Mutual Recognition), and EAC (Russian-speaking countries), enabling us to provide
- 06
Where is your factory located, and what is its production capacity?
The factory is located in Nanjing, China, with a production area of 14,000 square meters. It boasts a dedicated production base and a comprehensive manufacturing system, achieving an annual output value of hundreds of millions of yuan. The facility possesses full-process manufacturing capabilities ranging from sheet metal processing, busbar fabrication, component assembly to complete cabinet debugging, and can simultaneously undertake parallel production for multiple large-scale projects.
- 07
Is the factory an authorized manufacturing facility for ABB and Schneider?
Yes. The factory is an officially authorized cabinet manufacturer for ABB (for the MDmaxS series since 2015 and the MNS2.0 series) as well as for Schneider Electric (for the BLOKSET series).
- 08
What major projects has the factory completed?
Zhongtongfu has completed several major national projects, including China Telecom's Wuxi Tier 4 Data Center (187 MDmax ST cabinets, contract value of RMB 21.92 million), China Telecom's Tianmuhu International Data Center (over 200 MNS cabinets, total investment exceeding RMB 500 million), the prefabricated containerized power distribution room at Hefei South High-Speed Railway Station (22 BLOKSET cabinets, RMB 7.6 million), and the Dongguan Haixinsha Wastewater Treatment Center (21 MNS 2.0 cabinets).
- 09
Can the factory accept customer inspections?
We warmly welcome you. We encourage clients to visit our factory in person to witness the production processes, quality control systems, and manufacturing capabilities firsthand. We can assist with arranging the inspection itinerary, providing translation services, and handling reception arrangements.
- 10
What extreme tests have been conducted on the factory's products?
All products in the series have passed national-level comprehensive type tests, including seismic testing (intensity 9), internal combustion arc testing (100 kA/0.5 s), high-altitude testing (4000 m), salt spray testing (96 hours), extreme cold testing (-40°C), and EMC (Electromagnetic Compatibility) testing.
- 11
What is the typical delivery lead time for a factory order?
Standard cabinet models typically take 15–30 days from order placement to shipment. Customized projects require 45–60 days depending on technical complexity and component procurement cycles, with specific delivery dates agreed upon at order confirmation.
- 12
What main series of low-voltage distribution cabinets do you produce?
We manufacture a comprehensive range of low-voltage distribution cabinets, including the ABB-authorized MDmaxS and MNS2.0 series, the Schneider-authorized BLOKSET series, our self-developed MNS series, as well as fixed-type GGD units and pull-out-type GCK/GCS units, covering all current ratings up to 6300 A.
- 13
What are the differences between the MDmaxS, MNS, MNS2.0, and BLOKSET cabinet models?
MDmaxS (ABB-authorized) – a drawer-type structure authorized by ABB in 2015, designed for high-reliability power distribution applications [13†L31]. MNS (self-developed) – features a 25 mm modular C-shaped profile, offering flexible assembly and excellent cost-effectiveness. MNS2.0 (ABB-authorized) – an officially ABB TTA-certified cabinet model with optimal space utilization [13†L34]. BLOKSET (Schneider-authorized) – a fixed-segmented structure equipped with patented dual-clamp technology, requiring no maintenance for over 10 years.
- 14
What is the product's protection rating, and which standards does it comply with?
The protection rating can be customized according to the application environment, available from IP30 to IP54. IP30 is suitable for cleanroom environments, IP41 for general industrial settings, and IP54 for harsh conditions such as dusty or humid environments. The entire product series strictly complies with both IEC 61439-1/2 "Low-voltage switchgear and control equipment" and GB/T 7251.1/12 "Low-voltage switchgear". Additionally, products can be certified with CE, UL, EAC, or CB marks depending on the target market.
- 15
Can I specify a brand for the components?
Yes. We support flexible configuration for all brands—the main incoming switch can be selected from international brands such as ABB, Schneider, or Siemens, or Chinese brands like Delixi and Chint. You may choose freely; simply provide your budget and requirements, and we will offer the optimal solution and quote.
- 16
Can you provide OEM/ODM customization services?
Yes. We offer comprehensive OEM/ODM services—your logo, RAL color standards, component configurations, and custom size requirements can all be implemented. Our minimum order quantities are flexible, supporting everything from small trial orders to large-scale production orders.
- 17
Can your cabinet withstand harsh operating conditions?
Yes. Our product testing is highly comprehensive. Our products have passed a full range of extreme tests including earthquake resistance (intensity 9), internal combustion arc (100 kA/0.5 s), high-altitude performance (4,000 m), salt spray exposure (96 hours), extreme cold conditions (-40°C), and electromagnetic compatibility (EMC) testing, making them suitable for harsh environments such as power plants, petrochemical facilities, mines, and coastal areas.
- 18
What is the entire process from inquiry to delivery?
The standard process is as follows: Customer inquiry → Technical clarification (drawing/parameter confirmation) → Quotation → Order confirmation → Contract signing → Payment receipt → Production → Factory acceptance testing (FAT) → Packaging and shipment → Delivery by sea or air.
- 19
What information do I need to provide to get a quote?
You must provide: a single project System Layout Diagram (SLD) or electrical schematic, circuit detail list (current specifications and load types for each circuit), installation environment information (indoor/outdoor, altitude, temperature, humidity), target market and certification requirements, and special requirements (cabinet type, preferred brand, protection rating, etc.). The more complete the documentation, the more accurate the quote will be.
- 20
Can you produce the product according to my drawings?
Yes. You can provide your electrical drawings and technical specifications. Our engineers will review the drawings and conduct compliance checks, then proceed with production based on verified accuracy. If the drawings do not meet standards or require improvements, we will provide professional recommendations.
- 21
Can I track the production progress? And are there any acceptance tests required for the project?
Certainly. We will regularly update you on key milestones such as production progress and completion of factory inspections. Customers are welcome to conduct on-site acceptance testing (FAT) at our facility before shipment, or we can arrange video livestream acceptance tests as needed. Packaging and shipment will only proceed after FAT approval.
- 22
Are you responsible for packaging and transportation?
Yes. We provide professional export packaging services—including standard wooden export boxes, as well as customized options such as fumigation treatment, rain/water resistance, and shockproofing. For transportation, we handle all export procedures including space booking, customs clearance, and commodity inspection. Our trade terms cover FOB, CIF, EXW, and CFR.
- 23
Can we accept a 100% letter of credit?
Yes. We accept 100% L/C at sight. The L/C terms must be mutually agreed upon before order confirmation to avoid additional costs from subsequent modifications.
- 24
If the delivery is delayed due to our fault, will storage fees apply?
We will notify you to arrange payment and shipment once the goods are produced. If the goods remain at the factory longer than the agreed period (typically 30 days) due to the customer's reasons, we will charge reasonable storage fees.
- 25
I've placed a large order for multiple cabinets at once. Could I negotiate more favorable payment terms?
Certainly. For large orders (typically those exceeding $500,000 in contract value or 50 units of cabinets), we offer customized payment plans to be finalized through mutual communication.