Is the system pressurized?

No, this is a non-pressure system designed for standard water heating applications.

What is the hail resistance capability?

The system is designed to withstand hail resistance up to 25mm in diameter.

What are the payment terms?

We accept LC, T/T, D/P, PayPal, Western Union, and small-amount payments.

High Efficient Pre-Heating Vacuum Tube Solar Hot Water Heater System

Name: High Efficient Pre-Heating Vacuum Tube Solar Hot Water Heater System
Brand: Shandong Longguang Tianxu Solar Energy Co., Ltd.
SKU: 1981438752

Shandong, ChinaShandong Longguang Tianxu Solar Energy Co., Ltd.

Negotiable

5,000 Pieces

Product profile

Customization

Available

After-sales Service

Provided

Warranty

1 Years

Condition

New

Type

Common Vacuum Tube

Certification

ISO, CE

Application

Water Heater, Solar Thermal

Pipe Material

Glass

Pressurized

Non-Pressure

Transport Package

Cartons

Specification

58*1800mm

Trademark

Tianxu or OEM

Origin

China

HS Code

8419

Production Capacity

500000 Pieces/Month

Key features

High Absorptivity Coating: Cu/SS-AIN(H)/SS-AIN(L) coating achieves 0.93~0.96 absorptivity with magnetron sputtering.

Premium Borosilicate Glass: Constructed with high borosilicate 3.3 glass for superior durability and heat resistance.

Advanced Vacuum Insulation: Evacuated space between tubes ensures extremely low heat loss and high thermal efficiency.

Hail Resistance: Designed to withstand hail impact up to 25mm diameter for outdoor reliability.

OEM and ODM Services: Customization services available for manufacturing and design requirements.

Fast Lead Time: Peak and off-peak season production completed within 15 working days.

ISO and CE Certified: Product meets international safety and quality standards with ISO and CE certification.

1-Year Warranty: Comprehensive 1-year warranty coverage provided for new condition units.

Company profile

Shandong Longguang Tianxu Solar Energy Co., Ltd.

Shandong, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2003-09-01 CertifiedNearest Port: Qingdao PortAverage Response Time: >24h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryShandong Longguang Tianxu Solar Energy Co., Ltd. is a China-based limited company established in 2002, with 406 employees and a large manufacturing site in Shandong. The supplier develops and manufactures solar water heaters, solar vacuum tubes, high-borosilicate glass tubes, heat pumps, photovoltaic products, and energy-storage systems. Evidence indicates substantial production infrastructure, including more than 10 production lines, 10 electric furnaces, 70 solar vacuum tube lines, and 3 solar water heater lines. It reports ISO9001:2015 and ISO14001:2015 certification, 72 R&D engineers, 50 quality-control staff, and cooperation involving Tsinghua-related organizations. Export activity is significant, with 71%–90% of sales reportedly from exports and markets including Southeast Asia and the Middle East. However, the provided information does not substantiate after-sales processes, customer case studies, customized manufacturing procedures, or financial reliability.

Supplier typeThe supplier is identified as a limited company based in Zhucheng, Weifang, Shandong, China, while one record categorizes it as a trade company. Its described activities and product range show substantial manufacturing involvement in solar thermal, glass, heat-pump, photovoltaic, and energy-storage products.

CertificationsThe supplier reports ISO9001:2015 and ISO14001:2015 certificates, along with other unspecified certifications. These explicitly support quality-management and environmental-management system credentials, although the unspecified certifications cannot be assessed further.

R&D capabilityThe supplier reports 72 R&D engineers, involvement with Beijing Tsinghua Industrial Development Institute and Beijing Tsinghua Solar Co., Ltd., advanced solar vacuum tube production lines, and work across solar heating, cooling, desalination, heat pumps, and photovoltaic systems. It also states that it drafted a national standard for 3.3 high-borosilicate glass, providing explicit evidence of R&D and technical-development capability.

Production capacityProduction capacity is supported by 406 employees, a 133,340 m² manufacturing plant, more than 10 production lines, 10 electric furnaces, 70 solar vacuum tube lines, and 3 solar water heater lines. The supplier also reports annual production of one million tons of high-borosilicate glass and 16 million solar vacuum tubes, plus lead times within 15 workdays in both off-peak and peak seasons.