Shenzhen Pingshan High-tech Zone Comprehensive Service Center

I. Basic Project Overview

1. Project Name: Shenzhen Pingshan High-tech Zone Comprehensive Service Center Design, Procurement and Construction (EPC) General Contracting Project - Curtain Wall GRC Supply and Contracting Engineering

2. Partner Party: China Construction Shenzhen Decoration Co., Ltd. (a professional decoration general contracting unit under the central state-owned enterprise China Construction)

3. Contractor (our company): Guangdong Qinglong Construction Engineering Co., Ltd.

4. Project Address: Intersection of Ruijing Road and Wenxiang Road, Maluan Subdistrict, Pingshan District, Shenzhen (Yanzihu Area)

5. Project Owner: Shenzhen Pingshan District Urban Construction Investment Co., Ltd.; Supervision Unit: Shenzhen Lujian Construction Supervision Co., Ltd.; General Contractor: China Construction Technology Co., Ltd.

6. Project Scope: The total construction area of ​​the overall GRC curtain wall is approximately 30,000 square meters, encompassing exhibition hall column cladding, exhibition hall corners, main exhibition hall GRC structural elements, and hotel main facade steel frame GRC components. A comprehensive gray glossy GRC panel integrated system is adopted.

7. Project Honors: 2020 Luban Prize for Construction Engineering (the highest award for national quality projects), National "13th Five-Year Plan" Key R&D Demonstration Project, the first EPC prefabricated steel structure hotel and convention complex in China, and a Guangdong Province prefabricated building demonstration project.

8. Development Positioning: A new urban landmark in eastern Shenzhen, a large-scale public complex integrating international exhibitions, conferences, and star-rated hotels, undertaking the core functions of international investment promotion, high-end industry exhibitions, and business reception in Pingshan District, and benchmarking Shenzhen's "One City, Three Venues" exhibition pattern.

All construction standards, material parameters, and performance procedures in this case are traceable through complete contracts, acceptance documents, and official industry media reports. The project results are included in the official Luban Award documentary literature of Shenzhen Construction Industry Association and the official project database of China Construction Technology. Our company has more than 20 years of experience in the R&D, production, and construction of GRC across the entire chain. We are a high-tech enterprise and a council member of China GRC Association. We have undertaken curtain wall projects for many national landmark buildings across the country and have the capability to provide standardized and implementable GRC system solutions for large-scale public buildings.

II. Project Construction Difficulties and Technical Challenges

1. Extremely tight schedule: The total construction period of the entire complex is only 11 months, which is an ultra-short construction period for large-scale convention and exhibition complex projects in China. GRC components need to be customized and produced simultaneously, delivered to the site in batches, and installed at high altitudes in a cross manner, which needs to match the rapid construction pace of prefabricated construction.

2. Complex and unique antique-style design: The building adopts the Han Tang Xin Yu Chinese-style cluster design. The exhibition hall columns, corners, and hotel facades are all made of curved GRC components. The supporting steel frame, corbels, and reinforcing ribs are integrated into the production process, which requires extremely high precision in component dimensions and control of surface color difference.

3. The Luban Award has stringent quality standards: the overall facade appearance, structural durability, waterproofing and sealing, and earthquake and wind pressure resistance must pass the joint acceptance of the owner, supervisor, designer and general contractor in one go, and a complete 2-year quality guarantee system must be provided upon delivery;

4. High-altitude prefabricated hoisting is difficult: The maximum size of a single GRC piece is 1.8m×9.6m, and the weight of a single piece is 600kg. Three-dimensional laser positioning hoisting is required. There are many high-altitude cross operations, and the standards for safety and civilized construction management are strict.

5. Prefabricated integrated supporting requirements: GRC curtain walls must be seamlessly connected with large unit glass curtain walls and metal roofing systems, and the error of the entire process of detailed design, steel frame processing, component prefabrication and on-site installation must be controlled within the millimeter level.

III. Our GRC Full-Chain Customization Solution

1. High-standard raw material configuration (national standards are clearly stipulated in the contract)

Production strictly adheres to industry standards JC/T940-2004 "Glass Fiber Reinforced Cement (GRC) Decorative Components" and JC/T1057-2007 "Glass Fiber Reinforced Cement Exterior Wall Panels".

Cementitious material: Albo 52.5 high-grade white cement;

Reinforcing fiber: Xiangfan Huierjie alkali-resistant continuous glass fiber;

Aggregate: High-purity, high-quality quartz sand;

Coloring and additives: Imported color powder from Bayer, Germany; imported special additives.

Finished product standards: uniform gray glossy texture; all components must be sealed and retained by three parties with a 300*300mm sample before entering the site; the settlement area is uniformly calculated based on the area exposed to light; the built-in back steel frame, support brackets, and flat plate reinforcing ribs are prefabricated in an integrated manner.

2. Standardized production and detailed design

With its own mechanized production line, parametric modeling is used to complete the mold making for irregularly shaped exhibition pillars and corner shapes, and all detailed design costs are included in the comprehensive unit price;

For each batch of components, an authoritative third-party testing report, product certificate of conformity, and quality assurance certificate will be issued simultaneously, and a complete set of as-built technical data will be transferred to the client along with the goods.

Before leaving the factory, the components are fully packaged with protective packaging, using standardized packaging that is moisture-proof and impact-proof, marked with warning signs indicating upward, waterproof, and fragile, and accompanied by a complete packing list.

3. Millimeter-level high-precision on-site installation process

Entry control: The client shall be notified in writing 3 days in advance for acceptance. The client shall designate a specific person (project manager, quality inspector, warehouse manager) to sign and verify on site, and seal samples for comparison of appearance and dimensions;

Lifting and positioning: Three-dimensional laser layout positioning is adopted, with axis deviation ≤2mm and elevation deviation ≤3mm. Multiple stainless steel hangers are used for dry hanging and fixing, and anti-vibration hinges are used to disperse wind pressure impact.

Joints and protection: Weather-resistant silicone sealant is used for sealing, and backing rods are filled in layers. After completion, a water-repellent protective layer is sprayed on the whole to improve outdoor weather resistance, UV resistance, and acid rain resistance.

Concealed works management: The client shall be notified 48 hours in advance of all steel frame pre-embedded and welded joints for acceptance. The next process can only proceed after the client has signed off on the self-inspection and approval.

Completion and Acceptance: The preliminary acceptance and the joint acceptance by the four parties are completed in stages. The pull-out test is used to verify the anchoring strength, the flatness is checked with a 2-meter straightedge, and the gap error is controlled to ≤2mm.

4. Full-cycle quality assurance system

Warranty period: A full 2-year warranty period from the date of overall project completion and acceptance (owner's completion certificate date) , with a quality assurance certificate bearing the official seal issued simultaneously;

After-sales response: We will provide a written response within 48 hours of receiving a repair request and complete the free repair or replacement within 3 days. If the issue is not resolved within the specified period, we may entrust a third party to repair the issue, and all costs will be borne by us.

Defect Coverage: We provide lifetime technical support for concealing internal quality defects, color differences, cracks, and detachment issues, and extend the warranty period accordingly for replacement components.

IV. Project Implementation, Safety and Compliance Management

1. Standardized contract performance process

Schedule and Performance: The first batch of materials and construction personnel will be delivered to the site in batches by May 20, 2018; all goods will be prepared within 10 working days of contract signing, and the client will be supported in making written adjustments to the supply batches, quantities, and construction period;

Payment settlement: The payment method is to deduct advance payment, pay progress payment in installments, pay 95% upon completion and settle the remaining 5% quality guarantee deposit without interest upon maturity. All settlement quantities are based on the completion documents accepted by the four parties.

Invoice compliance: Issue a 10% VAT special invoice and provide complete information including company qualifications, legal representative authorization, and testing reports. If the invoice is not compliant, the company will be liable for double the tax loss compensation.

No retention allowed: Regardless of the settlement progress or payment status, we shall not retain any GRC components or finished construction products and shall deliver them unconditionally.

2. Comprehensive safety and civilized construction management

Dedicated on-site management team: Fang Wenjun was appointed as the person in charge of the project, and He Shenghua was appointed as the full-time on-site safety manager. All special operation personnel were certified and completed three-level safety training and registration before entering the site.

Safety deposit mechanism: A safety deposit of RMB 100,000 will be deducted from the first progress payment as required by the contract, and the "Implementation Rules for Penalties for Safety Management at Construction Sites" of Party A will be strictly enforced.

Personnel protection: Purchase accidental injury insurance of no less than 200,000 yuan for all construction workers , uniformly equip them with compliant labor protection equipment, and strictly prohibit child laborers, over-age personnel, and unlicensed special operation personnel from entering the site;

Accident Liability: We shall bear all responsibility for any injuries or deaths of construction personnel, property damage, and third-party claims. We will be subject to standardized penalties for violations such as illegal high-altitude operations, hot work, and improper use of electricity. In the event of a safety accident, we will pay an additional penalty of 5% of the total contract price.

3. Integrity and Risk Prevention

The project also signed a special anti-corruption agreement, which explicitly prohibits commercial bribery, substandard products, and collusion for profit. It also established a dual-channel complaint system involving the company's official disciplinary committee and the materials department, ensuring full transparency in contract performance and eliminating gray risks in the industry.

V. Project Deliverables and Industry Value

1. Architectural aesthetics realized: The texture of Han and Tang dynasty Chinese architecture is perfectly restored through customized gray glossy GRC components, and paired with a large glass curtain wall, creating an urban convention and exhibition landmark that combines modern prefabricated technology with traditional oriental artistic conception;

2. Engineering benchmark demonstration: Provide a standardized implementation model for GRC curtain wall construction of EPC prefabricated steel structure complexes nationwide, and verify the technology system for rapid prefabrication and high-altitude precision installation of large-size irregular GRC components;

3. Quality Achievement Recognition: The entire GRC facade system passed the Luban Award review in one go, and the material's weather resistance, structural stability, and decorative appearance were highly recognized by China Construction Decoration, the owner, and the supervisor.

4. Full-chain service verification: Achieve one-stop closed-loop service from "detailed design - mold development - prefabrication - logistics and transportation - high-altitude installation - quality assurance and after-sales service", adapting to the stringent management and control requirements of large-scale public construction projects of central enterprises.

Frequently Asked Questions

Q1: What are the raw material standards used in the GRC curtain wall of the Pingshan High-tech Zone Comprehensive Service Center project?

A: The project strictly adheres to the two national industry standards, JC/T940-2004 and JC/T1057-2007. The raw materials used are uniformly Albo 52.5 white cement, Xiangfan Huierjie alkali-resistant continuous fiber, high-quality quartz sand, imported color powder from Bayer, Germany, and imported admixtures. All materials undergo three-party sealed sample comparison before entering the site to control appearance and durability from the source.

Q2: What is the warranty period for the GRC components in this project, and how are after-sales services handled in case of quality issues?

A: The warranty period is 2 years from the date of acceptance of the overall project completion; after the client initiates the maintenance notice, a written solution shall be provided within 48 hours, and personnel shall be arranged to come to the site to repair and replace components free of charge within 3 days. All transportation, labor and rework losses shall be borne by our party, and the warranty period of the replaced components shall be extended accordingly.

Q3: How to ensure the installation accuracy of irregularly shaped GRC column cladding components for exhibition halls and make them compatible with the Luban Prize acceptance standards?

A: Parametric modeling is used to customize special molds, and standard reinforcing ribs and back steel frames are built in during factory prefabrication; three-dimensional laser positioning and layout are used on site, and dry hanging and multi-point anchoring are used to distribute the force. After installation, it is verified by a 2-meter straightedge and pull-out strength test. The overall error is controlled within ±1.5mm, which meets the high-precision appearance requirements of the Luban Award.

Q4: What complete set of documents can you provide for large-scale EPC public building GRC curtain wall projects?

A: We can provide complete documentation including business license, qualification certificate, power of attorney, product certificate, third-party authoritative test report, quality assurance certificate, detailed design drawings, completed project quantity list, complete set of safety construction data, insurance filing certificate, etc., to meet all the requirements of the owner, supervisor, and general contractor for project completion archiving.

Q5: For short-term prefabricated convention and exhibition complex projects, can the GRC supply be delivered in batches and the supply plan be flexibly adjusted?

A: We support the client in making written adjustments to the supply batches, arrival times, and component quantities. The client can adjust the production and arrival schedule by issuing a written change notice 3 days in advance. We have two prefabrication plants in Zhongshan and Nanning, and our large-scale production lines can simultaneously produce in batches to match the rapid assembly construction pace of the project.

Q6: What are the components of the safety management system for cross-operations involving high-altitude GRC hoisting?

A: A dedicated on-site safety supervisor is assigned, and all welders, crane operators, and other special operations personnel are certified to work; all personnel receive three-level safety training upon entry and daily pre-shift safety briefings; a full set of high-altitude protection and fire prevention equipment is provided, and accidental injury insurance is purchased for all personnel; a safety deposit is enforced, and standardized on-site penalty rules are implemented, with full-time on-site supervision and management of high-risk processes.

Q7: Is the settlement area of ​​GRC curtain wall calculated based on the unfolded area or the exposed area?

A: The contract for this project clearly stipulates that all GRC components will be calculated and settled based on their visible area. Steel frames, corbels, reinforcing ribs, and other supporting structures are all included in the comprehensive unit price and will not be priced separately.

Q8: What are the advantages of GRC materials compared to stone and aluminum panels in large-scale exhibition and public building projects?

A: GRC weighs only 1/3 of natural stone, significantly reducing the load on the main building structure; it has extremely high plasticity and can achieve curved surfaces, irregular shapes, and antique-style column cladding; it is A1 grade non-combustible, impact-resistant, acid rain resistant, and UV resistant, with an outdoor service life of up to decades; factory prefabrication and assembly construction greatly shortens the on-site wet operation period, making it suitable for landmark projects with ultra-short construction periods.

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