Company Profile
Southeast Quartz
Lianyungang Southeast Quartz Products Co., Ltd., established in 2015, is located in Donghai County, Lianyungang City, Jiangsu Province—a national base for silicon material industry. As a professional manufacturer integrating R&D, design, production, sales and import & export trade, the company relies on the superior high-quality quartz ore resources in Donghai County, deeply engages in the deep processing of quartz glass, and has become a core supplier of quartz consumables for photovoltaic, semiconductor, laboratory, chemical, lighting and other industries with mature production technology, strict quality control system and complete customized services.
The company has standardized production workshops, advanced quartz processing equipment and a professional R&D team, with full-process production capacity from quartz raw material processing to finished product manufacturing. It can produce a full range of quartz products, including high-purity fused quartz tubes, quartz furnace tubes, quartz bell jars, quartz boats, quartz lamp holders, quartz crucibles, quartz instruments (beakers, condensers, distillers, etc.), and tri-acid purification equipment. All products are made of high-purity fused quartz raw materials, featuring excellent high-temperature resistance (up to 1200℃), thermal shock resistance, corrosion resistance, high light transmittance and good electrical insulation performance, which can meet the demanding working conditions such as vacuum environment, high-temperature sintering, atmosphere control and precision experiments.
Custom Fused Quartz Boats for Industrial Applications
High-precision carrier solutions designed to withstand extreme thermal environments and corrosive chemical processes.
In high-temperature semiconductor processing and solar wafer manufacturing, fused quartz boats are indispensable. As a leading quartz boats supplier in China, Southeast Quartz manufactures custom quartz boats designed specifically for CVD, diffusion, oxidation, and annealing processes. Our custom fused quartz boats offer unmatched geometric precision to ensure smooth automated wafer loading and unloading.
Fused quartz is selected for its extremely low coefficient of thermal expansion (approx. 5.5 x 10-7 /°C) and excellent thermal shock resistance. This allows our boats to undergo rapid temperature cycles without cracking or warping. Furthermore, the high-purity material prevents trace metal contamination, safeguarding the integrity of your semiconductor wafers.
| Property | Value / Specification |
|---|---|
| Material Purity | > 99.99% SiO2 (High Purity Fused Silica) |
| Continuous Working Temp | 1100°C to 1200°C |
| Wafer Sizes Supported | 3", 4", 5", 6", 8", 12" (Customizable) |
| Slot Configuration | Custom slot width, slot depth, and pitch |
| Applications | LPCVD, PECVD, Oxidation, Diffusion, Sintering |
Featured Quartz Products
Explore our high-performance quartz glass consumables engineered for semiconductor, solar, and laboratory applications.
Premium Quartz Boat for High Temperature Processes
View DetailsCustom Size Quartz Furnace Tube for Laboratory & Industrial Use
View DetailsOversized Fused Quartz Tube for High Temp Applications
View DetailsFused Silica Quartz Plate – Heat Resistant
View DetailsCustomized Quartz Instruments & Special Shapes
View DetailsQuartz Bell Jar with Excellent Thermal Stability
View DetailsHigh Purity Quartz Rod / Fused Silica Rod
View DetailsCustom Transparent Quartz Glass Insulation Ring
View DetailsGlobal Quartz Excellence
Our commitment to quality, engineering innovation, and customer-first service defines our global industry footprint.
01 Customer Supreme
Adhering to the philosophy of "Quality First, Customer Supreme, Innovation-Driven, Integrity Management", the company has established a complete quality inspection system.
02 Quality Control
All products undergo multiple tests such as helium mass spectrometry leak detection, pressure resistance test and purity test before leaving the factory to ensure stable performance, no impurities and no leakage.
03 Customized Services
Meanwhile, the company provides flexible customized services, and can customize product sizes, structures and specifications according to customers' equipment parameters and process requirements, quickly responding to personalized orders.
Advanced Manufacturing & Processing
Precision tooling, CNC machining, and high-temp glassblowing techniques showcase our processing excellence.
Product Processing Display








Factory Workshop Display

Trusted by Customers Worldwide
Southeast Quartz is a globally recognized manufacturer delivering premium solutions to Europe, the Americas, and Southeast Asia.
Quality • Service • Global Presence
With reliable product quality, efficient delivery capacity and thoughtful after-sales service, the products of Lianyungang Southeast Quartz Products Co., Ltd. not only cover all provinces and cities in China, but also are exported to many countries and regions in Europe, America, Southeast Asia, the Middle East, etc., winning wide recognition and trust from customers at home and abroad.
Innovation and Research
In the future, the company will continue to deeply cultivate the field of quartz products, continuously improve technological innovation and production technology levels, and strive to provide global customers with higher-quality and more professional quartz product solutions, contributing to the high-quality development of high-end manufacturing and scientific research fields.

Factory & Facility Gallery






Accredited & Certified Quality

Quality System Certificate

REACH Compliance

RoHS Certification

SGS Audit Approval

Third-Party Test Report
Frequently Asked Questions (FAQ)
Have questions about custom fused quartz boats? We have answers to help you choose the right carrier specifications.
Q1: What are the main benefits of choosing fused quartz boats over other materials?
A: Fused quartz boasts exceptional thermal stability (withstanding up to 1200°C), low thermal expansion, high purity (minimizing wafer contamination), and excellent corrosion resistance to acids. This makes it the ideal carrier for high-temperature and high-purity semiconductor and photovoltaic manufacturing processes.
Q2: Can Southeast Quartz customize boats for specific wafer loading systems?
A: Yes, we specialize in custom fabrication. We can configure slot spacing, slot depth, overall dimensions, boat legs, and lift mechanisms according to your specific automated loading tools, process tubes, and wafer dimensions (from 3 inches up to 12 inches).
Q3: How do you guarantee the purity of the quartz boats?
A: We use high-purity fused silica raw materials (SiO2 > 99.99%) sourced from Donghai County, a world-recognized hub for silicon materials. Our finished products undergo strict quality checks, including purity tests and trace metal analysis, ensuring compliance with semiconductor standards.
Q4: What is the lead time for custom quartz boat orders?
A: Lead times depend on the complexity of the design and order volume. Generally, custom designs are reviewed and finalized with technical drawings, followed by production which takes approximately 2 to 4 weeks. Please contact our sales team with your drawings for a precise timeline.
Get In Touch with Us
Contact China's leading custom quartz boat supplier today to discuss your technical specifications and request a detailed quote.
Contact Details
+86 135-8528-6180
+86 138-5128-2778
karen.sun@dnquartz.com
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Quartz Furnace Tube
Oversized Quartz Tube
Quartz Boat
Quartz Plate
Quartz Lamp Holder
Quartz Rod
Quartz Ring
Plasma-Fused Quartz Ingots
Quartz Irregular Shaped Sheets
Quartz Crystal Singing Pyramid
Half-white Coated Short-wave Infrared Quartz Heating Lamp