Shanghai Yushi Technology Development Co., Ltd.

Shanghai Kstone S&T Development Co .,LTD.

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Shanghai Yushi Technology Development Co., Ltd.

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Shanghai Yushi Technology Development Co., Ltd.
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City:shanghai
Province/State:shanghai
Country/Region:china
Contact Person:MsJin
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Shanghai Yushi Technology Development Co., Ltd.

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China Shanghai Yushi Technology Development Co., Ltd. manufacturer
China Shanghai Yushi Technology Development Co., Ltd. manufacturer
China Shanghai Yushi Technology Development Co., Ltd. manufacturer
China Shanghai Yushi Technology Development Co., Ltd. manufacturer
China Shanghai Yushi Technology Development Co., Ltd. manufacturer
Company Profile
Company Profile
About KSTONE

KSTONE is a professional manufacturer specializing in SF6 testing instruments, gas handling equipment, and eco-friendly gas solutions for the global power industry.

With over 13 years of professional experience, KSTONE has become one of the leading manufacturers in China with one of the most complete product ranges in the SF6 industry.

We provide reliable equipment and technical solutions for GIS manufacturers, switchgear companies, electrical utilities, high-voltage testing organizations, and industrial maintenance service providers worldwide.

Today, KSTONE products serve more than 1000 customers across global markets.


China Shanghai Yushi Technology Development Co., Ltd. manufacturer

Our Product Range

Our main products include:

  • SF6 Leak Detectors
  • SF6 Dew Point Meters
  • SF6 Comprehensive Testing Instruments
  • SF6 Recovery, Vacuum, Separation & Purification Systems
  • SF6 Mixed Gas Filling Devices
  • Density Relay Calibration Equipment
  • Vacuum Pumping Systems
  • C4F7N Gas Instruments & Equipment
  • Eco-Friendly Gas Handling Solutions

All products are designed for industrial applications in GIS, switchgear, and power equipment maintenance.


China Shanghai Yushi Technology Development Co., Ltd. manufacturer
Certifications & Qualifications

KSTONE has obtained:

  • ISO9001 Quality Management System Certification
  • National High-Tech Enterprise Certification
  • Specialized & Innovative Enterprise Certification
  • National Technology-Based SME Certification
  • Double Soft Certification Enterprise

These recognitions reflect our continuous investment in technology, product development, and manufacturing quality.


Industry Standards Participation

KSTONE actively participates in the development and revision of national and industry technical standards for SF6 and environmentally friendly gas technologies.

National Standard Participation
  • GB/T11023-2018
    High Voltage Switchgear — SF6 Gas Sealing Test Method
Industry Standards of the Energy Administration of the People’s Republic of China
  • DL/T1366-2023
    Sulfur Hexafluoride Gas for Power Equipment
  • DL/T2756-2024
    Guidelines for Detection and Recovery of Sulfur Hexafluoride and Its Mixtures for Electrical Equipment
  • DL/T1353-2024
    Technical Specification Standard for Sulfur Hexafluoride Treatment Systems
Group Standard Participation
  • Technical Specification Standard for Perfluoroisobutyronitrile (C4F7N) Gas Replenishment Devices

Industry Recognition
  • Recommended Manufacturer of SF6 Mixed Gas GIS Tools for State Grid Corporation of China (2022 No.290)
  • Member of China Electrical Equipment Industry Association
  • Member of China Fluorosilicon Organic Materials Industry Association




Trusted By / Our Customers


China Shanghai Yushi Technology Development Co., Ltd. manufacturerSupporting global customers in power transmission and gas handling applications.



Our Mission

KSTONE is committed to providing reliable, efficient, and environmentally responsible gas handling solutions for the global power industry.

We continue to focus on SF6 management technologies and next-generation eco-friendly gas applications to support safer and greener electrical systems worldwide.

Company Information
Basic Information
Company Name: Shanghai Yushi Technology Development Co., Ltd.
Business Type: Manufacturer
Brands: KSTONE
Employee Number: 40~60
Year Established: 2013
Total Sales Annual: 500,00,00-600,00,00
Company Location: 8B, No. 9, Lane 123, Shenmei Road, Zhangjiang High tech Park, Pudong New Area, Shanghai
Factory Location: Building A, No. 4458 Nanfeng Road, Fengxian District, Shanghai
Trade & Market
  • Company slogan:

    Shanghai Kstone S&T Development Co .,LTD.

  • OEM Overview:


    OEM & ODM Service


    We support OEM and ODM cooperation for SF6 gas recovery, purification, evacuation and testing equipment.


    From logo customization to complete system development, our engineering team can provide flexible solutions based on customer requirements.


  • Production Line:

    In-House Manufacturing

    KSTONE operates a modern production workshop for SF6 gas handling and electrical testing equipment.



    China Shanghai Yushi Technology Development Co., Ltd. manufacturer China Shanghai Yushi Technology Development Co., Ltd. manufacturer China Shanghai Yushi Technology Development Co., Ltd. manufacturer


    China Shanghai Yushi Technology Development Co., Ltd. manufacturer China Shanghai Yushi Technology Development Co., Ltd. manufacturer China Shanghai Yushi Technology Development Co., Ltd. manufacturer





  • R&D:

    Engineering & R&D

    Our engineering team focuses on SF6 gas handling technology, automation control and equipment reliability improvement.


    We continuously optimize gas recovery efficiency, vacuum performance and intelligent control systems for power industry applications.

  • Factory Information
    Market name: Worldwide
    Contact Person: Jin