QUALITY CONTROL

Strict quality control from component inspection to final testing ensures reliable performance of SF6 and C4F7N gas handling equipment.

CUSTOM ENGINEERING

Our engineering team provides customized gas handling solutions for SF6 recovery, gas analysis, C4F7N mixing and purification applications.

MANUFACTURING

In-house manufacturing, standardized assembly and equipment testing help ensure consistent product quality and dependable delivery.

GLOBAL SUPPORT

We provide technical consultation, equipment operation guidance and after-sales support for power utilities and GIS manufacturers worldwide.

WHO WE ARE & WHY CHOOSE US

China high quality SF6 Recovery System & SF6 Gas Tester suppliers

Shanghai Kstone S-T Development Co .,LTD.

Company Profile About KSTONE SHANGHAI KSTONE S-T DEVELOPMENT CO., LTD. KSTONE is a professional manufacturer of SF6 gas handling equipment, gas testing instruments, and C4F7N gas processing solutions for the global power industry. Established in 2013, KSTONE specializes in the development and manufacturing of equipment for gas-insulated switchgear (GIS), high-voltage electrical equipment, power ...

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Introduction

SHANGHAI KSTONE S-T DEVELOPMENT CO., LTD. (KSTONE), established in 2013, specializes in SF6 and C4F7N gas handling equipment. Our products include gas recovery and filling systems, gas analyzers, leak detectors, gas mixing systems, and gas separation and purification equipment. We provide reliable solutions for GIS manufacturers, power utilities, and high-voltage switchgear applications worldwide.

Service

Customized Professional Project Solutions, Supply of High-quality Equipment, Efficient On-site Commissioning, and Comprehensive After-sales Maintenance Support

History

13-Year Expert SF₆ Testing Equipment Manufacturer (China) Full product line | 1,000+ global clients | ISO9001 & national high-tech certified Standard-setting participant (national/industry/group levels) State Grid recommended supplier | Dual industry association member Products: SF₆/C₄F₇N gas detectors, recovery/purification/filling devices

Our Team

A 20-person technical R&D team, comprising senior engineers with 8+ years of experience, drives product iteration and technology exploration. Operating across hardware, software, and testing groups, the team allocates 30% of resources to upgrading existing products—like improving SF6 analyzer accuracy by 15%—and 70% to new projects such as next-gen fluorine gas sensors and AI analysis systems.

Environmental Insulating Gases Bring Gas Testing and Handling into Focus

Environmental Insulating Gases Bring Gas Testing and Handling into Focus Environmental insulating gases are receiving attention alongside cleaner chemical manufacturing. A video published by Hongdian Observation in September 2025, introducing Sanming Haisifu Chemicals, highlighted green production ...

KSTONE Showcases SF₆ Gas Testing and Handling Solutions at Electric & Power Indonesia 2026

KSTONE Showcases SF₆ Gas Testing and Handling Solutions at Electric & Power Indonesia 2026 From September 2 to 5, 2026, KSTONE participated in Electric & Power Indonesia 2026 at the Jakarta International Expo (JIExpo) in Jakarta, Indonesia. At Booth 3328 in Hall A3, the KSTONE team welcomed power ...

KSTONE Celebrates China’s National Day 2026

KSTONE Celebrates China’s National Day 2026 As China’s National Day approaches, KSTONE would like to extend our warmest greetings to our customers, partners, and friends around the world. October 1 marks China’s National Day, a special occasion that celebrates the founding of the People’s Republic ...