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Product Name:
2K Mid-Coat Primer
A two-component mid-coat primer suitable for both spot repairs and full-vehicle painting, featuring fast drying, excellent filling properties, superior intercoat adhesion, and outstanding sandability—enhancing the fullness and gloss of the topcoat.
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Product details:
2K Mid-Coat Primer
Product Features
- Two-component mid-coat primer suitable for both spot repairs and full-vehicle painting;
- It features fast drying, excellent filling properties, superior interlayer adhesion, and easy sandability, helping to enhance the fullness and gloss of the topcoat.
Applicable Substrate
- Old paint films that have been hardened and polished, along with various types of primers and auto body filler.
Construction Techniques
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Surface cleaning |
Use a dusting cloth to wipe away dust spots and silver powder particles from the surface. |
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Mixing ratio |
Middle coat primer: Primer hardener: Thinner |
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Construction-Ready Time |
1 hour at 25°C |
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Spray tools and air pressure |
Gravity-fed (top-pot) 1.3–1.7 mm |
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Number of Spray Coats / Film Thickness |
Apply 2-3 layers of wet spraying |
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Flash-drying time |
Allow interlayer flash drying for 3–5 minutes at 25°C. |
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Resting time |
Allow to sit for 5–10 minutes before heating and baking. |
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Drying Time |
Temperature |
Surface drying time |
Watermill Time |
Dry grinding time |
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25°C |
10 minutes |
25 minutes |
60 minutes |
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60°C |
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15 minutes |
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Baking Tips |
After spraying, let it sit for 5–10 minutes, then bake at 60°C for 15 minutes to allow dry grinding. |
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Our strengths
The company boasts a dedicated, in-house R&D team and currently holds multiple invention and utility model patents. In 2012, the company played a key role in drafting the industry standard HG/T 4561-2013, "Unsaturated Polyester Putty." Additionally, in 2021, it contributed to the development of a national standard—GB/T 41953-2022, "Paints and Varnishes—Determination of Moisture Content in Coatings by Gas Chromatography"—as well as the revision of another national standard: GB/T 6739, "Paints and Varnishes—Determination of Film Hardness by Pencil Method." In the coming years, the company plans to actively collaborate with several universities and research institutions through industry-academia partnerships, fostering innovation and co-developing cutting-edge products tailored to meet both customer needs and market demands. At the same time, we will continue strengthening our intellectual property strategy, with an ongoing focus on applying for and securing recognition for advanced technology projects. This includes pursuing certifications such as National High-Tech Enterprise status, Zhaoqing City High-Tech Enterprise designation, Guangdong Provincial Engineering Technology Research Center accreditation, and Zhaoqing City Engineering Technology Research Center certification, among others.
Factory Strength
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Factory Strength
Exhibition and trade shows
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Exhibition and trade shows
Qualifications and Honors
RoHS 2.0 Certificate for Unsaturated Polyester Putty
Quality System Certificate
Environmental Management System Certificate
Specialized, Specialized, and New Small and Medium-Sized Enterprises
Guangdong Provincial Engineering Technology Research Center
Qingyuan City Engineering Technology Research and Development Center
High-Tech Enterprise Certificate 2024
High-Tech Enterprise Certificate 2023
Invention Patent (A Preparation Method for Polyester Resin Suitable for Sprayable Atomic Putty, Atomic Putty Itself, and Its Preparation Method)
Invention Patent (A Solvent-Resistant Mud Yellow Eyeshadow and Its Preparation Method – Invention Patent Certificate)
A scrape-coated mid-coat automotive coating based on thermoplastic acrylic resin and its preparation method – Invention Patent Certificate
A High-Speed Rail Atomic Primer and Its Preparation Method – Invention Patent Certificate
A Dual-Axis Mixing and Dispersion Device for Coating Production – Utility Model Patent Certificate
A Tail Gas Recovery and Treatment System for a Coating Production Workshop – Utility Model Certificate
A Fully Automatic Water-Based Coating Filling and Weighing System – Utility Model Certificate
A Water-Based Coating Dispersion Vessel with a Dual-Dispersion Stirrer Head – Utility Model Certificate
An Eco-Friendly Coating High-Speed Dispersion Device – Utility Model Certificate
Utility Model Patent Certificate – A High-Level Coating Tank
Utility Model Patent Certificate – A Device for Pouring from Iron Drums
Utility Model Patent Certificate – A Resin Raw Material Storage Tank
Certificate of Honor 2
Certificate of Honor 1
Certificate of Honor
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Developing high-quality coating solutions
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Sihui Company Address:
No. 10 Chuangzhan 1st Street, Jianggu Fine Chemical Zone, Sihui City
Qingyuan Company Address:
No. 10 Jia Shun Road, Jin Fu Industrial Zone, Yin Zhan, Qingcheng District, Qingyuan City
Phone:86-763-3697988
International:86-180-2330-1776
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