HomeSupplier Discoveryarrow-rightInstruments & Metersarrow-rightOther Physical Measuring Metersarrow-rightProving Ring Factories & Companies
Filter
Category
More
Management Certification
More
R&D Capacity
Annual Revenue
More
No.of Employees
More
Province & Region
More
about proving ring
  • Technological Innovation
  • Reliable Supply Chains
  • Substantial Manufacturing Capabilities

proving ring100+ factories verified

Hangzhou Civit Instrument Equipment Co., Ltd.

5.0
Main Products:
Soil Aggregate Rock Testing Equipment, Cement Mortar Testing Equipment, Concrete Testing Equipment, Asphalt Testing Equipment, Scientific Lab Equipment, Survey Instrument
Country/Region:
Zhejiang, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Hangzhou Civit Instrument Equipment Co., Ltd. is professional manufacturer supplier of Testing equipments in construction industry and scientific lab, we specialized in dealing Soil Rock Aggregate testing equipment, Cement Concrete testing equipment, Asphalt testing equipment, also supply Steel testing equipment, Survey instrument, Scientific lab equipment, General labware etc.

Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd.

5.0
Main Products:
Universal Testing Machine, Compression Testing Machine, Soil Testing Instruments, Petrolium Testing Machine, Geo-Technical Testing Machine, Surveying Testing Machine, Non-Destructive Testing Machine, Asphalt&Pavement Testing Machine, Concrete&Cement Testing Machine, Lab Equipment
Country/Region:
Jiangsu, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Nanjing T-Bota Scietech Instruments & Equipment Co., Ltd. (TBT) mainly deals in exporting laboratory Testing/Soil Testing/Materials Testing/NDT/Surveying Instruments including total station and other relevant products!

SHAOXING KARE INSTRUMENT EQUIPMENT CO., LTD.

13 yrs
·Trading Company
Main Products:
Tensile Testing Machine; Universal Testing Machine; Compression Testing Machine; Los Angeles Abrasion Testing Machine; Test Equipment
Country/Region:
Zhejiang, China
R&D Capacity:
OEM Service
Company Profile:
Shaoxing Kare Instrument Equipment Co., Ltd sets manufacturing, sale, design, and service in one professional unit. It located at Guoqing Village, Cao'e Street, Shangyu District, Shaoxing City, Zhejiang Province. We devote ourselves to provide all kinds of testing and measuring equipment which used for metallic material, cement and concrete, bitumen, soil and so on. It is widely used in road, railway, bridge, school, and other construction material enterprises.

Shenzhen Jinshengrun Technology Co., Ltd.

5.0
Main Products:
Stainless Steel Bracelets and Necklaces, Tungsten Steel Ring, Tungsten Ring, Smartwatch(Activity Tracker), Smart Ring, Titanium Steel Necklace, Necklace Pendant, Smart Glasses
Country/Region:
Guangdong, China
Sample Service:
Sample Available
Company Profile:
Shenzhen jinsheng run Technology Co., Ltd. (hereinafter referred to as "jinsheng run Technology") has been deeply engaged in the field of stainless steel and tungsten steel jewelry for more than ten years. Relying on Shenzhen's perfect intelligent manufacturing industrial ecology and cutting-edge design resources, it has developed into a modern scientific and technological accessory enterprise integrating R&D and design, precision manufacturing, global sales, and full-chain services. The company has always been committed to the mission of "technology empowering jewelry aesthetics and quality defining the wearing experience, " and has built a unique technological and brand advantage in the metal jewelry niche.

Binzhou Nuk Metals Co., Ltd.

5.0
Main Products:
Rigging Hardware, Shackles, Wire Rope Clips, Thimbles, Snap Hook, Carabiners, Swivels, Hooks, Marine Hardware, Swivel Snap Hook
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Binzhou Nake Metal Products Co., Ltd. is located in Xicheng Industrial Park, Wudi County, Shandong Province. The company mainly engaged in stainless steel rigging products and Marine hardware products. Has become a professional stainless steel rigging and Marine hardware manufacturers. The company's products cover more than 20 product series such as stainless steel 304/316 shackle, stainless steel 304/316Turnbuckle, clamp head, rotary head, hanging ring, door buckle, hook, etc., with more than 1000 kinds of products. The sales of these products of our company have been among the top in many countries in Europe and Asia. We have cooperated with foreign factories for a long time and have our own factories, which can be customized according to customers' needs, so that customers can get their satisfactory products from us, and our prices are acceptable to customers, and sell them the best products at the lowest price. Nac Metal has always been adhering to the "professional, reliable, efficient, win-win, integrity" business philosophy. Our company's factory has professional technical engineers responsible for product development and mold design and development, is a very mature company. Our company through professional technical standards, reliable product quality, efficient service attitude to serve China, Europe and the United States, Central Asia, Southeast Asia, Japan, Europe and other countries and regions. Naco metal, originated in China, serving the world. I hope to have the opportunity to cooperate with more businesses, to produce satisfactory products for them, and feel that our company is an enterprise with both quality and service.

Fasto Industrial Co., Ltd.

5.0
·Manufacturer/Factory & Trading Company
Main Products:
Rivets, Nuts, Screws, Bolts, Washers, Anchors, Tools
Country/Region:
Tianjin, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
FASTO is our core brand, dedicated to providing precision hardware solutions worldwide. Behind FASTO, two key entities support our business: Tianjin Winfast Technology Co., Ltd., our main manufacturing base, and Xi'an Fasto Industrial Co., Ltd., our international sales and service company. This structure ensures reliable production capacity combined with professional global trade support.

Shandong Meiling Chemical Equipment Co., Ltd.

34 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
High-efficiency heat exchanger, High-strength fasteners, Heavy forging, Auto Parts
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Shandong Meiling Chemical Equipment Co., Ltd. Was built in 1958 and currently employs more than 1, 200 people, including college education of engineers and technicians account for more than 30%. Enterprise total area of 360, 000 square meters, engaged in energy-efficient heat exchanger design and manufacture of non-ferrous metals (titanium, zirconium, nickel) pressure vessel; Automotive braking systems, exhaust manifold, turbochargers and other auto parts manufacturing; High-strength fasteners, air conditioning centrifugal fan, heavy forging manufacturing; Design and manufacturing, environmental engineering design, construction and operation of urban water supply and quality of production of mineral water and other environmental protection equipment.

Dongguan Yaobo Metal Factory

13 yrs·4.8
·Manufacturer/Factory & Trading Company
Main Products:
D rings, Key rings, wire key ring, carabiner, wire hooks, screw, nut, jewelry findings, rings, bracelet, neckleace
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Established in 2005 Dong Guan YaoBo Metal Co., Ltd is a professional manufacturer and exporter that is concerned with the design, development and production of metal Hair Clips, Lanyard Clips, FOB Hardware Clips, Swivel Hooks, Hardware Ornaments, Split Key Rings, Ball Chain, Carabiner, Snap Hook, Stainless Steel Necklae, Stainless Steel Bracelet, Jewelry Findings, Gifts etc...

Shanghai Fortune Group Corporation

Main Products:
Continuous Casting Machine, Rolling Machine, Upward Casting Machine, Industrial Furnace, CNC Machine, Conforming Machine, Drawing Machine
Country/Region:
Shanghai, China
Sample Service:
Sample Available
Company Profile:
Fortune Group is a leading international turnkey project contractor specializing in the nonferrous metals industry, located in Shanghai China. As anintegrated one-stop service provider, we deliver end-to-end solutions encompassing raw material supply, mining, smelting and casting equipment R&D copper/ aluminum process inginnovation, equipment supply and finished product technical services. Our closed-loop service approach ensures seamless execution for your project from raw materials to final production.

Ningbo Dongheng Sealing Co., Ltd.

7 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Sealing Materials, Spiral Wound Gasket, PTFE Tape, PTFE Gasket
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Ningbo Dongheng Sealing Co., Ltd develops and produces all kinds of sealing materials and products, our factory produce all kinds of seals, such as metal gaskets like spiral wound, ring joint, double jacket, kammprofile, solid metal gaskets, and non-metallic gaskets, like high-strength graphite gasket, PTFE gasket, graphite composite gasket, non-asbestos gaskets. And also involves in trading PTFE tape, ceramic packing, graphite packing, PTFE packing, PTFE graphite packing, Aramid PTFE packing, and other material packings. Ningbo Dongheng is currently in a sealed area of advanced technology products are PRO - widely used in mechanical, chemical, metallurgy, electric power, shipping, food, aerospace, medicine, electronics and other industries. The company not only has a large number of customers in China, but products are also exported to overseas.

Hebei Jinhu Import & Export Trading Co., Ltd

Main Products:
Cast Iron Cookware Set, Cookware, Cookware Sets, Dutch Oven, Outdoor Sports Products, Glass Products, Enamel Cast Iron Dutch Oven, Gietijzeren Pot Met Emaille, Glass Saucepan, Cast Iron Steak Frying Pan
Country/Region:
Hebei, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Established in March 2025, our company is a professional import and export enterprise integrating independent R&D and design, standardized large-scale production, global marketing and one-stop cross-border trade services. With over 10 years of solid factory manufacturing experience, we are specially built to serve global overseas customers, providing stable, high-quality and cost-effective product solutions for international distributors, brand owners, chain retailers and bulk purchasers worldwide. Supported by decades of in-depth physical production experience, our self-owned factory owns mature production technology, strict full-process quality control standards and stable large-scale supply capacity, laying a solid industrial foundation for our foreign trade business. We set up the professional export company to improve cross-border cooperation efficiency, simplify procurement procedures, reduce transaction costs and provide full-cycle customized services, directly linking our strong manufacturing strength with global market demand. Our main product lines cover four core categories: Cast iron cookware, high-quality glass products, complete kitchen utensils and daily cooking appliances, as well as outdoor sports and leisure supplies. All products are designed and produced in strict accordance with international safety standards and mainstream market usage habits, with rich styles, complete specifications, stable performance and strong practicability. We support flexible cooperation modes including spot wholesale, OEM customization, ODM joint R&D and brand exclusive processing, fully meeting diversified procurement needs of global customers. At present, our products have been exported to many countries and regions worldwide, and we have established long-term stable cooperative relationships with qualified local agents, distributors and brand customers. Our factory maintains steady annual sales growth, and has won wide recognition and good reputation in the global kitchenware and outdoor products supply chain for reliable quality, punctual delivery and comprehensive after-sales support. We have an independent professional R&D and design team, which keeps up with global consumption trends, environmental policies and market changes. Taking independent innovation as the core driving force, we continuously optimize product structure, upgrade production technology, improve appearance design and enhance product added value, helping our global partners gain stronger local market competitiveness. Different from ordinary trading companies, we have the dual core advantages of self-owned factory and professional foreign trade operation. We implement full-process quality supervision and efficient management from raw material procurement, production, finished product inspection to packaging and delivery, effectively ensuring product consistency, stable delivery and controllable costs. We accept both large-volume long-term orders and small-batch customized orders, providing truly worry-free one-stop procurement solutions for overseas customers. With solid manufacturing foundation, professional trade team, complete supply chain and continuous innovation investment, our company has broad development prospects and huge market potential. We adhere to the business philosophy of "quality first, integrity-based, win-win cooperation", and are committed to being a long-term trusted partner for global buyers. We sincerely welcome worldwide partners to visit our factory, negotiate business and carry out in-depth cooperation for a better future.

GUANGZHOU HUILIAN MACHINERY CO.,LTD

5.0
Main Products:
Hydraulic Hammer Breaker, Hydraulic Breaker Spare Parts, Hydraulic Breaker Damper, Hydraulic Breaker Seal Kit, Hydraulic Breaker Diaphragm/Membrane, Excavator Engine Assy/Engine Parts, Excavator Attachments, Excavator Hydraulic Pump, Excavator Seal Kit, Excavator Travel Swing Motor Assy
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Guangzhou Huilian Machinery Co., Ltd (HFH Seals registered in Hong Kong), located in Guangzhou, China, is a professional supplier /OEM supplier for excavator parts, and has been specializing in this line of business for more than 15 years.

Jilin Songjiang Smart Joint Co., Ltd.

28 yrs
·Manufacturer/Factory & Trading Company
Main Products:
PE Fitting, Fusion Machine, PE PIPE
Country/Region:
Jilin, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Smart Piping Group is the manufacturer of HDPE fittings, pipes and fusion machinery since 1992.

Pingxiang Rongjian Environmental Protection Chemical Packing Co., Ltd

5.0
Main Products:
Ceramic Ball, Pall Ring, Molecular Sieve, Honeycomb Ceramic, Activated Alumina, Structured Packing, Metal Random Packing, Plastic Random Packing, Ceramic Random Packing
Country/Region:
Jiangxi, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Pingxiang Rongjian Environmental Protection Chemical Packing Co., Ltd.

Taizhou Fengye Metal Products Co., Ltd.

12 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Stainless Steel Screw, Stainless Steel Bolt, Stainless Steel Machine Screw
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Greetings from Taizhou Fengye Metal Products Co Ltd.

Hunan Xuecheng Structural Ceramics Technology Co., Ltd.

5 yrs
·Manufacturer/Factory & Trading Company
Main Products:
Zirconia Ceramic, Alumina Ceramic, Aluminium Nitride Ceramic, Silicon Carbide Ceramic, Silicon Nitride Ceramic
Country/Region:
Hunan, China
R&D Capacity:
ODM Service
Sample Service:
Sample Available
Company Profile:
Hunan Xuecheng Structural Ceramics Technology Co., Ltd., nestled in the dynamic Wangcheng District of Changsha City, Hunan Province, China, stands as a beacon of innovation and excellence in structural ceramic materials. Our commitment encompasses the entire production spectrum, from the genesis of powder raw materials, through meticulous research and development, to the intricate processes of product molding and sintering. We take pride in our comprehensive production line, specializing in precision ceramic parts, ceramic grinding balls, and pioneering ceramic products for our esteemed clientele.

Guangzhou Anfook & Dakerden Jewelry Co., Ltd

2 yrs
Main Products:
stainless steel Ring, earring, pendant, bracelet, silver Ring, earring, pendant, bracelet
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
ANFOOK - DAKERDEN is the union of two companies with different product lines.

Shandong Lanyuguang Chemical Co., Ltd

5.0
·Trading Company
Main Products:
Marine Pump, Screw Pump, Coupling, Marine Pump Core, Marine Equipment Accessories
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Company Profile:
Shandong Lanyuguang Chemical Co., Ltd.

JIANGSU LIANGYI CO., LIMITED

Main Products:
Forged Rings, Forging Parts, Forging Rings, Forged Shafts, Forging Flanges, Seamless Rolled Rings, Forged Parts, Forged Flanges, Forging Pipes, Forged Pipe
Country/Region:
Jiangsu, China
R&D Capacity:
OEM Service
Sample Service:
Sample Available
Company Profile:
Jiangsu Liangyi Co.,Limited is one professonal special alloy material supplier from China,

Shanghai Hongzhou Testing Instrument Co., Ltd.

Country/Region:
Shanghai, China
Company Profile:
Shanghai Hongzhou Testing Insturment Co., Ltd as a professional science and technology of Civil equipment provider, engaged in testing equipment R & D, production, sales and service for the whole insturment of high-tech civil equipment companies, products covered by bridge Road other technical fields. Product sales coverage in North America and Europe, Asia, Oceania and other countries and regions.

Hebei Gaotiejian Testing Instrument Co., Ltd.

17 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Universal Testing Machine
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Iwintesting equipment company is a high-tech enterprise focusing on the research and development, production and sales of engineering quality test and testing instruments. The company serves in the construction, the railroad, the highway, the water conservancy, the electric power, the university and the scienitic research institute.

Hehua Machinery Technology (Kunshan) Co., Ltd

9 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Stamping Part, Sheet Metal Part, Laser Cutting Part, Machining Part, Welding Part
Country/Region:
Jiangsu, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hehua Machinery Techology(Kunshan) Co., Ltd is an OEM manufacturing factory. Mainly produce the stamping parts, sheet metal parts, mold making, spark-erosion wire cutting, CNC machining, laser cutting and welding. Our company own various equipments about 100, such as: Gantry milling, Laser cutting, Bending machine, Shearing machine, Punching machine 8T-200T, CNC Machining center, CNC Lathe machine, Milling machine, Wire-electrode cutting, Grinding machine, Drilling machine, Threading machine, Argon welder, Gas shielded welding machine, Spot welding machine, Squeeze riveter(Pressure riveting machine), Laser marking machine. Company has rich experience in mold design and excellent manufacturing capability, strict quality control system, for customers from product design, mould manufacture to the product production do unified service! And in August 2015 passed ISO9001: 2008 quality certification system and TS16949: 2009 certification system, our products are exported to Europe, America, Australia, Spain, Netherlands, Philippines, Italy, Japan and other countries, mainly client has saint-gobain, Germany continental, Faiveley, Ford, Mitsubishi, L& L, Tenneco and other well-known enterprises, for many years deep old customer recognition, on the basis of mutual benefit common development, to provide stable and reliable quality service to our customers.

Hebei Shuzhi Rubber Products Co., Ltd.

Manufacturer/Factory & Trading Company
Main Products:
Car Door Seal, Rubber Sealing Strip, Foamed Sealing Strip, Seal, EPDM Rubber Seal, EPDM Sponge Rubber, Silicone Hose, Rubber Gasket, Automobile Rubber Tube, Door Sealing Strip
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
**Hebei Shuzhi Rubber Products Co., Ltd. - Precision Engineered Sealing & Fluid Transfer Solutions**

Maanshan Fangyuan Precision Machinery Co., Ltd.

Main Products:
Slewing Bearing, Slewing Ring, Bearing, Turntable Bearing, Wind Power Bearing, Solar Energy Bearing, Swing Ring, Excavator Bearing, Excavator Spare Parts, Manufacturing Slewing Rings
Country/Region:
Anhui, China
Sample Service:
Sample Available
Company Profile:
Maanshan Fangyuan Precision machinery Co., Ltd is a private enterprise, which is the largest manufacturer specializing in designing and manufacturing slewing rings in China more than thirty years. It is the unique enterprise on Stock market.

QINGDAO SEA NOVA BUILDING PROFILES PRODUCTS CO., LTD

11 yrs
·Manufacturer/Factory & Trading Company
Main Products:
PVC Profile, Door Profile, Door Jamb, Sliding Door, Patio Door, Door Frames, Door Sill, Door Component, Retrackable Screen, Threhold, Window Profile, Single Hang Window
Country/Region:
Shandong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Nova Plastech Inc.: Pioneering Excellence in PVC & Composite Profiles for Doors and Windows

Baoji Taizehui Metal Technology Co., Ltd.

Main Products:
Hafnium
Country/Region:
Shaanxi, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
The company specializes in the production of zirconium, hafnium and hafnium oxides, chlorides and hafnium crystal bars, hafnium sponges and other hafnium-related products, as well as rare and precious metal materials and high-temperature materials such as tantalum and niobium. The company is a comprehensive enterprise integrating R&D, production, sales, processing and manufacturing, technical consulting and technical services; It has a professional sales team, a technical team and a production team.

DMS SEALS TECHNOLOGY CO., LIMITED

16 yrs·5.0
·Manufacturer/Factory & Trading Company
Main Products:
Hydraulic Seals,Orings,Filled PTFE Seals, Oil Seal, Spring Energized Seals, Piston Seals, Guide Tape,Bonded seals, wiper selas
Country/Region:
Guangdong, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
DMS SEALS was established in 2008. We are a technology enterprise which specialized in the production of seals, the development of seals material and the solution of the sealing of special working condition. We own 120 staffs which including 70 middle and senior technicians. Our factory covers more than 10000 square meters which including 8000 square meters for the workshop. Our production equipment and test equipment are on leading level in the same industry. We are the one of the biggest enterprise who specialized in manufacturing and developing seals in China. We have long time cooperation and communication with many universities and research institutions at home and board. We own a number of invention patents and leading production process. The R&D teams have the ability to design and develop seals for various of complicated working condition of sealing system. We have already passed the certification of ISO 9001 and IATF 16949. We have the mature technical reserve for the solution of ultra-high temperature, ultra-high pressure, ultra-low temperature, highly corrosive and other special working condition. Our products are widely used in construction machinery, automobile, automation equipment, petroleum, water conservancy, chemical engineering, aviation and other area.

Hebei SPT Seals Technology Co., Ltd.

5.0
Main Products:
U Packing for Gate Valves, Hammer Union Seals, Vee Packing Seal Sets, Well Service Packing, Rotary/Radial Shaft Seal Ring, Hydraulic and Pneumatic Seals, High Pressure Washer Pump Seals, Oil&Gas Sealing Soultion, O Rings, Oil Seals
Country/Region:
Hebei, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hebei SiPaiTuo Seal Technology Co., Ltd is abbreviated as Hebei SPT Seals Technology Co., Ltd. SPT seals company is located in Julu Economic and Technological Development Zone, Xingtai City, Hebei Province, close to the expressway and with convenient transportation.

Hangzhou MZ-Magnet Technology Co., Ltd.

19 yrs
·Manufacturer/Factory
Main Products:
Magnetizer Demagnetizer Machine, Speaker Magnetizer, Programmable Encoder Magnetization Inspection Machine, Magnetizing Fixture, Magnetizing Tooling Machines
Country/Region:
Zhejiang, China
R&D Capacity:
OEM/ODM Service
Sample Service:
Sample Available
Company Profile:
Hangzhou MZ-Magnet Technology Co., Ltd. - A Beacon of Excellence in Electromagnetic magnetizing Innovation
16