Sanya MIXC T1 Office 15,000㎡ HUIYA SC800 Raised Access Floor Project

Home/Case/Sanya MIXC T1 Office – 15,000㎡ HUIYA SC800 Steel Cementitious Raised Floor Project

In November 2025, Changzhou Huiya Decorative Materials Co., Ltd. successfully completed the raised access floor installation for the public area finishing project of T1 Office Tower at Sanya MIXC Urban Complex (Plot DA02-19-01). The project adopted HUIYA SC800 Steel Cementitious Raised Access Floor, with a total installation area of approximately 15,000㎡. Construction commenced on September 8, 2025, lasted approximately two months, and was successfully delivered upon completion on November 15, 2025.

Project Overview

Project Name: Sanya MIXC SC800 Steel Cementitious Raised Access Floor Installation Project
Project Address: No. 233 Yingbin Road, Jiyang District, Sanya City, Hainan Province, China
Project Scope: Public Area Finishing Works of T1 Office Tower, Sanya MIXC Urban Complex (Plot DA02-19-01)
Installation Area: Approximately 15,000 square meters
Construction Period: September 8, 2025 — November 15, 2025
Product Used: HUIYA-SC800 Steel Cementitious Raised Access Floor
Partner Decoration Company: Hai Jia Chun Decoration Design Engineering Co., Ltd.

Project Partner & Background – Sanya MIXC and the Hainan Free Trade Port Closure Operation

Sanya MIXC is a landmark urban complex project developed by Grandjoy Holdings under COFCO Group in Hainan, located at No. 233 Yingbin Road, Jiyang District, Sanya City, immediately adjacent to the Sanya Municipal Administrative Center. The project integrates a shopping center, Grade A office tower, and high-end residences into a single mixed-use development, with the T1 Office Tower serving as the core office tower of the entire project. Tenants include internationally renowned brands such as UNIQLO and Starbucks Coffee, positioning the development as a modern business and commercial consumption complex within Sanya’s Central Business District. The T1 Office Tower under construction in this project is the high-rise office tower within the complex, where the public-area finishing works imposed stringent requirements on the floor system in terms of load-bearing capacity, cabling flexibility, and overall flatness.

▲ Exterior view of Sanya MIXC Urban Complex. The project integrates a shopping center with high-rise office towers; the lower-level podium houses the JOY CITY commercial complex, while the upper tower is the T1 Office Tower under construction in this project.

Historic Milestone: The Hainan Free Trade Port Closure Operation

It is worth noting that the delivery timing of this project aligns closely with a major milestone in Hainan’s development. On December 18, 2025, the Hainan Free Trade Port will officially launch the island-wide closure operation, marking a landmark event in China’s reform and opening-up process. Following the closure, Hainan will implement a special customs supervision model of “first-line liberalization, second-line management, and intra-island freedom,” becoming a special tariff zone within China’s territory.

The Sanya MIXC T1 Office Tower, completed on the eve of this historic milestone, is positioned to serve as a key carrier for receiving international enterprises, hosting multinational headquarters, and converting Free Trade Port policy benefits following the closure. After the closure:

Zero-tariff goods circulation will boost the prosperity of international brands within the complex;
15% preferential corporate income tax and individual income tax rates will attract numerous multinational corporations, high-end service industries, and digital economy enterprises to settle in T1 Office Tower;
Cross-border capital flow facilitation will position Sanya as an offshore business hub serving Southeast Asia and the RCEP region.

Against this backdrop, Sanya, as one of the core cities of the Hainan Free Trade Port, continues to experience growing demand for high-quality office space. As a modern office space designed to capture Free Trade Port policy dividends and attract enterprise tenants, the quality of the underlying engineering of T1 Office Tower directly impacts subsequent leasing efforts and tenant experience. As the core infrastructure of Grade A office tower public areas, the raised access floor system serves critical functions including high- and low-voltage cabling, network communication, and HVAC underfloor air distribution. The application of HUIYA SC800 Steel Cementitious Raised Access Floor in this project provides the office tower with flexible underfloor cabling space and a stable load-bearing foundation, well-suited to the frequent cable adjustments and equipment reconfigurations typical of office environments.

Product Used – HUIYA SC800 Steel Cementitious Raised Access Floor

HUIYA SC800 belongs to the LIGHT-800LBS class within HUIYA’s Steel Cementitious raised access floor series. It is a steel-cement composite raised access floor product developed by HUIYA for commercial offices, financial institutions, educational facilities, libraries, and similar applications.

This series of raised access floors is formed by electrically welding two steel plates together, with the interior filled with lightweight foamed cement. The surface is coated with a smooth epoxy anti-corrosion coating, providing excellent fire resistance, load-bearing capacity, and sound absorption performance. The product also offers excellent stability in humid environments, making it especially suitable for office buildings in high-humidity coastal cities such as Sanya, Hainan.

SC800 Product Specifications:

Parameter	Specification
Product Model	HUIYA-SC800 (LIGHT-800LBS)
Panel Dimensions	600mm × 600mm
Panel Thickness	34mm
Steel Plate Thickness	Top 0.6mm / Bottom 0.7mm
Uniform Distributed Load	14.8 KN/m²
Concentrated Load	3.70 KN
Single Panel Weight	14.15 Kg
Core Material	Steel-encapsulated foamed cement core
Surface Treatment	Epoxy anti-corrosion coating
Fire Resistance Rating	Class A non-combustible
Support System	Adjustable-height metal pedestals (range: 55mm — 2000mm)

Product Structure and System Composition

The SC800 system is composed of panels + adjustable steel pedestals + stringers (optional) + screws, forming a stable and robust raised floor structure. Each pedestal head is fitted with a flame-retardant sound-insulating gasket, effectively reducing friction noise between the metal pedestal and metal panel. The pedestal base bonds to the concrete substrate via HUIYA’s proprietary rubber pad, made of environmentally friendly, recyclable materials. Delivered in bare-panel state, the surface accommodates a wide range of finishes, including carpet, PVC, and linoleum, providing flexibility to suit different decorative styles across various zones.

Panel Core Structure: Top and bottom steel plates welded and encapsulated, with lightweight foamed cement injected internally and an epoxy anti-corrosion coating applied to the surface, resulting in excellent overall strength and durability;
Sound-Insulating Gaskets: Each pedestal is equipped with flame-retardant sound-insulating gaskets to reduce friction between metal pedestals and metal panels, thereby minimizing noise generation;
Bare-Panel Finish: Floor panels are secured with screws, allowing carpet, PVC, and other finishes to be applied to the surface upon completion of installation;
System Structure: Composed of steel pedestals, stringers (optional), and screws to form a robust structure, with support heights adjustable within a range of 55mm to 2000mm;
Pedestal Base: Bonded with HUIYA proprietary rubber pad accessories made of environmentally friendly, recyclable materials;
Environmental Performance: The all-steel composite structure is asbestos-free and complies with green building requirements.

Applicable Scenarios

The system creates an effective spatial separation between the floor and the structural slab through the raised cavity, providing flexible solutions for cable routing and ventilation engineering. It is especially suited for:

Commercial office buildings (Grade A office tower public areas)
Banks and financial institutions
Higher education facilities and libraries
Data centers and control centers
Public areas of large commercial complexes

The Sanya MIXC T1 Office Tower public area project represents precisely the core application scenario for the SC800 product.

Installation Record

The total installation area of this project is approximately 15,000㎡, covering the public areas of T1 Office Tower.

1. Pre-Construction – On-Site Survey of High-Floor Bare Concrete Delivery State

Prior to the start of construction, the HUIYA engineering team worked closely with Hai Jia Chun Decoration Design Engineering Co., Ltd. to conduct on-site surveys and layout planning across all floors. At the time of entry, T1 Office Tower’s public areas were delivered in bare concrete condition. The construction team conducted detailed on-site surveys: the concrete substrate was largely level, mechanical and electrical conduits were properly installed, and clear floor-to-ceiling heights were ample, all confirming readiness for the raised access floor system installation.

2. Moisture-Proofing Treatment – Adapting to Hainan’s High-Humidity Climate

Considering that Sanya is located in a tropical maritime climate zone with high year-round humidity, the construction team applied a professional moisture-proofing coating treatment over the concrete substrate. A yellow epoxy moisture-proofing coating was applied across the entire installation area, effectively blocking upward moisture migration from the concrete substrate and ensuring the long-term stability of the raised access floor system in high-humidity environments.

▲ Substrate condition after completion of moisture-proofing coating: the yellow epoxy moisture barrier evenly covers the concrete substrate, with proper edge sealing around column bases and reserved treatment at expansion joints. Construction personnel are preparing for pedestal positioning and base bonding, with the first batch of SC800 panels and adjustable metal pedestals already staged on the floor.

3. Pedestal Positioning and Panel Installation

The construction team progressed through the work zones following standardized installation procedures. First, adjustable metal pedestals were precisely positioned over the moisture-proofing layer, with laser levels used to calibrate each pedestal head elevation, followed by SC800 panel installation. The 15,000㎡ large-area installation was divided into multiple parallel construction streams to ensure adherence to the project schedule.

▲ On-site construction progress: SC800 panels are installed row by row along the column grid, with the un-installed moisture-proofing layer and positioned pedestal bases visible near the window areas. Footprints on the panel surfaces are temporary marks from the construction process and will be cleaned thoroughly prior to delivery.

4. Installation Completion

After approximately nine weeks of continuous construction, the entire 15,000㎡ SC800 Steel Cementitious Raised Access Floor system was fully completed on November 15, 2025. The overall floor surface is level and aesthetically pleasing, with uniform panel joints and securely fastened pedestal nodes, meeting the delivery standards required for Grade A office tower public areas.

▲ T1 Office Tower public area after installation: SC800 Steel Cementitious Raised Access Floor is laid evenly with uniform panel joints, and the fixing points at each pedestal node are clearly visible. Edge treatment around windows is neat and orderly. The floor system will subsequently be paired with public-area decorative finishes (carpet/PVC) for secondary surface installation.

Project Significance – HUIYA SC800’s Strategic Implementation in the Hainan Free Trade Port

The successful delivery of the 15,000㎡ raised access floor project at Sanya MIXC T1 Office Tower carries multiple strategic significances for Changzhou Huiya Decorative Materials Co., Ltd.:

✅1. A Benchmark Case on the Eve of Hainan Free Trade Port Closure

The project completion date (November 15, 2025) was just one month before the island-wide closure operation of the Hainan Free Trade Port (December 18, 2025). As a core commercial carrier for Free Trade Port policy benefits, the Sanya MIXC T1 Office Tower’s infrastructure quality directly relates to the modern business image of the Free Trade Port. The successful application of HUIYA SC800 in this project signifies that a major commercial landmark of the Hainan Free Trade Port has recognized HUIYA’s product portfolio.

✅ 2. Validation of Construction Organization Capability for Single Large-Area Orders

A single installation area of 15,000㎡ imposes substantial requirements on production scheduling, logistics distribution, on-site construction organization, and cross-regional coordination. From the Changzhou factory to Sanya, Hainan – a logistics chain spanning approximately 2,000 kilometers – and from the September commencement to the November delivery in a tight schedule, HUIYA completed the task with consistent and reliable delivery capability, validating the company’s overall service capacity for large urban complex projects.

✅ 3. Validation of Product Adaptability in Tropical High-Humidity Environments

Sanya features a typical tropical maritime climate with high annual humidity and harsh salt-spray environments, demanding extremely high moisture-proofing, anti-corrosion, and anti-mildew performance from raised access floors. The SC800 product, with its steel-encapsulated foamed cement core structure combined with epoxy anti-corrosion coating, demonstrated excellent environmental adaptability on top of moisture-proofing layer treatment, accumulating empirical case experience for HUIYA products’ future market expansion in South China, Southeast Asia, and other high-humidity regional markets.

✅ 4. Establishment of Cooperation with Premium Local Decoration Companies

The project partner, Hai Jia Chun Decoration Design Engineering Co., Ltd., is a local Hainan decoration company with extensive commercial fit-out experience. Through this project, HUIYA established a stable cooperative relationship with Hai Jia Chun, laying the foundation for future collaboration on additional commercial real estate, office buildings, and key Free Trade Port projects across the Hainan region.

✅ 5. Market Expansion in the Commercial Complex Segment

Unlike HUIYA’s traditional strengths in semiconductor cleanrooms, data centers, and R&D office facilities, the Sanya MIXC project represents a Grade A office tower public area within an urban commercial complex. The successful execution of this case marks a further opening of HUIYA’s product portfolio into the urban complex market segment, complementing HUIYA’s previous case experience in projects such as the Guangzhou International Finance City, Shanghai BMW R&D Center, and Wuhan Optics Valley PPF.

From the policy benefit window of China’s special tariff zones to the modern infrastructure of Grade A office tower public areas, HUIYA SC800 Steel Cementitious Raised Access Floor has played a pivotal connecting role in the Sanya MIXC T1 Office Tower project. The successful delivery of this project represents another field demonstration of HUIYA Decorative Materials’ 15 years of professional expertise, and a significant strategic move by the company toward the Free Trade Port, the marine economy, and broader commercial space markets.

Changzhou Huiya Decorative Materials Co., Ltd. will treat the Sanya MIXC project as a new starting point, continuing to uphold the integrated “R&D, Production, Sales” service philosophy, and providing professional and reliable raised access floor products and installation services for more commercial complexes, financial institutions, high-end office towers, and semiconductor cleanroom projects.

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