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SINHAI: A Leading Polycarbonate Sheet Manufacturer in China

SINHAI: A Leading Polycarbonate Sheet Manufacturer in China

SINHAI stands out as one of the largest and leading Polycarbonate Sheet Manufacturers in China. It has implemented a strict quality control system and an excellent raw material choice mechanism. The company holds certifications like ISO 9001 - 2015, CE, ROHS, and SGS, and even has its self - patent Bamboo Polycarbonate Sheet. With 3 plants, SINHAI is dedicated to providing a one - stop solution for the safe daylighting industry and glazing systems. It continuously innovates and moves forward. The main product range includes Hollow Polycarbonate Sheet, Crystal hollow PC Sheet, Solid polycarbonate Sheet, Embossed PC Sheet, Corrugated PC Sheet, and PC H/U Type Accessories. An additional plant located in Kashgar, Xinjiang, an important hub along the Belt and Road, brings added value and good services to customers due to its unique location. SINHAI offers fast delivery, a durable service life for PC sheets, reasonable prices, energy - saving features, and cost - effectiveness. It has served
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Why choose us?

Strong Quality Assurance with Multiple Certifications

SINHAI ensures strict quality control using premium raw materials like SABIC material with Lotte UV resins. The company holds certifications such as ISO 9001-2015, CE, RoHS, and SGS, guaranteeing product compliance with international standards. Its self-patented Bamboo Polycarbonate Sheet showcases innovative design and durability, meeting diverse project requirements for safety and reliability.

Comprehensive Product Range and Customization Capability

Offering a wide array of products including Hollow, Crystal Hollow, Solid, Embossed, and Corrugated PC Sheets, along with PC H/U Type Accessories, SINHAI caters to various needs. With 60+ free moulds, the company supports OEM/ODM services, enabling customized solutions for different thicknesses, colors, and specifications, such as the hot-selling 8mm/10mm Bamboo PC sheets and diamond embossed corrugated sheets.

Strategic Location for Efficient Delivery and Cost Savings

Situated in Kashgar, a key Belt and Road hub, SINHAI's additional plant ensures fast delivery to Middle Asia and beyond, significantly reducing freight costs and time. This strategic location enhances supply chain efficiency, allowing the company to offer competitive pricing while maintaining quick turnaround for orders, ideal for large-scale projects worldwide.

Extensive Experience and Global Market Reach

With over 30 years of industry experience and 3 production plants, SINHAI has a proven track record in delivering one-stop daylighting and glazing solutions. Serving over 180 countries/regions, the company excels in agricultural, industrial, and commercial projects (e.g., greenhouses, roofing, sound barriers). Its technical expertise and global presence ensure reliable, innovative, and energy-saving solutions for diverse applications.

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Sinhai’s polycarbonate signboards are durable, lightweight solutions for indoor and outdoor applications. Available in 1–3mm thicknesses, these solid sheets offer high clarity (90% light transmittance) and resistance to weathering, UV rays, and impacts. Customizable with digital printing, embossed logos, or colored tints, they are ideal for advertising light boxes, directional signs, and retail displays. The sheets are easy to fabricate with standard tools and compatible with adhesive or mechanical fastening. Sinhai’s OEM services include pre-cut sizing and edge finishing. Contact us for signboard material specifications and customization options.

Frequently Asked Questions

Do you take special orders?

Yes , We accept customized products.
We have a factory ourselves, we are on this business for 30+ years in China
For normal polycarbonate sheet orders, we can deliver within 7 days. For orders that require cut-to-size services and thermoforming, delivery time will be extended
The fastest delivery speed.Free samples are provided for testing.We have a professional greenhouse construction team.ISO 9001:2008 CE certification quality.There are Ten polycarbonate sheet production lines.
Usually we accept T/T (30% deposit and balance against B/L copy), L/C. Other payment terms can be negotiable.

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customer evaluation

Mark Thompson
Durable Signboards for High-Traffic Areas

"A stadium in the US chose Sinhai’s polycarbonate signboards for wayfinding. The 5mm solid sheets withstand crowds and harsh weather, with a scratch-resistant surface that’s easy to clean. The backlit option ensures visibility at night, and the quick turnaround on custom designs helped us meet event deadlines. Highly functional and visually appealing."

Emma Green
Eco-Friendly Signboards with Recyclable Material

"An environmental organization in Australia used Sinhai’s recycled polycarbonate signboards for outdoor campaigns. The material’s sustainability aligns with our mission, and the vibrant prints stay sharp in all weather conditions. The lightweight design allows for easy relocation, making them ideal for temporary events. Sustainable and impactful."

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Versatile Polycarbonate Signboards

Versatile Polycarbonate Signboards

Constructed from embossed or solid PC sheets (1.2mm-10mm), Sinhai's signboards provide lightweight durability and 70-85% light transmittance for backlit use. UV-resistant coatings prevent fading, while 60+ free molds enable custom logos and textures. Available in clear, colored, or opal finishes, they meet RoHS and CE standards, suitable for advertising light boxes and outdoor signage. Features include easy installation, impact resistance, and global delivery to 180+ countries.

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