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Rainbow Electronics Co Ltd

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Overview

Product sourcing insights & recommendations

tradeKorea.com
rainbowelec.co.kr
22 来源

Rainbow Electronics Co., Ltd. is a specialized manufacturer of temperature control devices and HVAC components with over 40 years of industry experience. The company operates manufacturing hubs in South Korea and China, serving markets in more than 30 countries.

Their core product portfolio focuses on high-precision liquid-expansion thermostats and thermometers, particularly favored for their reliability in commercial kitchen equipment and industrial measurement. In the 2026 market landscape, the company is well-positioned to benefit from global green building initiatives and the shift toward supply chain resilience through its dual-hub manufacturing strategy.

The detailed report below provides a comprehensive analysis of their product range, international certifications, and strategic outlook for 2026.

Based on the report, here are the next steps you can take:

Liquid Expansion Capillary Thermometer Industrial Boiler Thermometer

Products · 2 lists

Pressure Capillary Thermometer Stainless Steel -40~320 Liquid Filled Remote Reading Industrial Pipeline OEM/ODM

Pressure Capillary Thermometer Stainless Steel -40~320 Liquid Filled Remote Reading Industrial Pipeline OEM/ODM

$24.50-27.205.0(82)
MOQ: 10 pieces
21% reorder rate≤2h response time
Zhejiang Xinzhongxin Instrument Technology Co., Ltd.Zhejiang Xinzhongxin Instrument Technology Co., Ltd.verified🇨🇳CN5 yrs
Small Round White Capillary Water Thermometer WKO-120B 0~120°C Long String Freezer Thermometer with ODM Customization Support

Small Round White Capillary Water Thermometer WKO-120B 0~120°C Long String Freezer Thermometer with ODM Customization Support

$1.96-3.585.0(952)
MOQ: 150 pieces
300+ store reviews33% reorder rate≤5h response time
Shanghai Jiutian Automation Equipment Co., Ltd.Shanghai Jiutian Automation Equipment Co., Ltd.🇨🇳CN10 yrs
Dial 52mm Boiler Industrial Capillary Thermometer Hot Water Temperature Gauge

Dial 52mm Boiler Industrial Capillary Thermometer Hot Water Temperature Gauge

$3.79-3.975.0(777)
MOQ: 200 pieces
300+ store reviews≤4h response time
Xi'an Cabin Kitchen Wares Co., Ltd.Xi'an Cabin Kitchen Wares Co., Ltd.🇨🇳CN10 yrs
High Quality Capillary Thermometer for Oven Boiler Refrigerator-Custom OEM Support

High Quality Capillary Thermometer for Oven Boiler Refrigerator-Custom OEM Support

$4.184.6(757)
MOQ: 10 pieces
300+ store reviews8% reorder rate≤2h response time
Guangzhou Di Era Scientific Instrument Co., Ltd.Guangzhou Di Era Scientific Instrument Co., Ltd.🇨🇳CN5 yrs
Capillary Pressure Thermometer 0-120°C Dial Temperature Gauge Boiler Water Pipe Industrial Temperature Meter with Copper Probe

Capillary Pressure Thermometer 0-120°C Dial Temperature Gauge Boiler Water Pipe Industrial Temperature Meter with Copper Probe

$74.8(799)
MOQ: 100 units
300+ store reviews17% reorder rate≤4h response time
Jinan Sinopts Energy Technology Inc.Jinan Sinopts Energy Technology Inc.verified🇨🇳CN11 yrs
HUBEN Industrial Stainless Steel Remote Transmission Temperature Gauge Flexible Capillary Dial Thermometer for Boiler Water Tank

HUBEN Industrial Stainless Steel Remote Transmission Temperature Gauge Flexible Capillary Dial Thermometer for Boiler Water Tank

$24-304.5(614)
MOQ: 100 pieces
25% reorder rate≤8h response time
Ningbo Huben Instrument Co., Ltd.Ningbo Huben Instrument Co., Ltd.verified🇨🇳CN7 yrs
Capillary Cooler Oven Boiler Thermometer Flange Capillary Stainless Steel Cooler Thermometer Capillary With 0-600

Capillary Cooler Oven Boiler Thermometer Flange Capillary Stainless Steel Cooler Thermometer Capillary With 0-600

$15-15.504.8(408)
MOQ: 50 pieces
100+ store reviews12% reorder rate≤2h response time
Xi 'an Supreme Electric Co., Ltd.Xi 'an Supreme Electric Co., Ltd.verified🇨🇳CN6 yrs
Stainless Steel 304 Pressure Thermometer Boiler Printing and Dyeing Water Oil Temperature Temperature Gauge

Stainless Steel 304 Pressure Thermometer Boiler Printing and Dyeing Water Oil Temperature Temperature Gauge

$45-604.6(481)
MOQ: 1 piece
100+ store reviews13% reorder rate≤6h response time
Changsha Luosen Automation Technology Co., Ltd.Changsha Luosen Automation Technology Co., Ltd.🇨🇳CN8 yrs
AKS Industrial Capillary Oil Level Temperature Gauge Thermometer with Capillary

AKS Industrial Capillary Oil Level Temperature Gauge Thermometer with Capillary

$12-134.6(229)
MOQ: 50 pieces
Huzhou Accuracy Instrument Co., LtdHuzhou Accuracy Instrument Co., Ltdverified🇨🇳CN3 yrs
Stainless Steel Liquid Filled Food Temperature Gauge Pressure Thermometer With Capillary Tube Industrial Display

Stainless Steel Liquid Filled Food Temperature Gauge Pressure Thermometer With Capillary Tube Industrial Display

$484.8(470)
MOQ: 1 piece
Xiamen Kehao Automation Co., Ltd.Xiamen Kehao Automation Co., Ltd.verified🇨🇳CN18 yrs
Plastic Capillary Temperature Gauge for Floor Boiler 120C IP55 Rated 200mm Probe Length OEM/ODM Customizable

Plastic Capillary Temperature Gauge for Floor Boiler 120C IP55 Rated 200mm Probe Length OEM/ODM Customizable

$3.20-4.504.9(671)
MOQ: 10 pieces
500+ store reviews20% reorder rate≤4h response time
Wenzhou Bingo Imp. & Exp. Co., Ltd.Wenzhou Bingo Imp. & Exp. Co., Ltd.verified🇨🇳CN17 yrs
Textile Industry Capillary Silicon Oil Filled Pressure Type Thermometer With Ss Probe

Textile Industry Capillary Silicon Oil Filled Pressure Type Thermometer With Ss Probe

$35-555.0(808)
MOQ: 10 pieces
50% reorder rate≤2h response time
Wuqiang County Huayang Instrument FactoryWuqiang County Huayang Instrument Factory🇨🇳CN7 yrs
350C Capillary Thermometer Cooper Pressure Thermometer Capillary Oven Thermometer for Oven Heater Boiler Refrigerator

350C Capillary Thermometer Cooper Pressure Thermometer Capillary Oven Thermometer for Oven Heater Boiler Refrigerator

$4.504.8(358)
MOQ: 2 pieces
1200+ store reviews16% reorder rate≤2h response time
Shenzhen Shengtaixin Technology Co., Ltd.Shenzhen Shengtaixin Technology Co., Ltd.🇨🇳CN5 yrs
Electric Water Boiler Capillary Thermometer

Electric Water Boiler Capillary Thermometer

$1.80-24.3(77)
MOQ: 2000 pieces
≤10h response time
Shanghai Dynamic Electric Co., Ltd.Shanghai Dynamic Electric Co., Ltd.🇨🇳CN18 yrs
Capillary Thermometer 0-100C Rigid Stem SS304 Case 270mm Dial OEM/ODM IP66 Customizable Probe Length Class 1.5 Accuracy for

Capillary Thermometer 0-100C Rigid Stem SS304 Case 270mm Dial OEM/ODM IP66 Customizable Probe Length Class 1.5 Accuracy for

$40-504.3(466)
MOQ: 1 piece
≤6h response time
Nanyang Huaye Explosion Protected Instrument Co., Ltd.Nanyang Huaye Explosion Protected Instrument Co., Ltd.🇨🇳CN1 yr
0~120C Dial Boiler Capillary Thermometer with Probe OEM Customizable Industrial Use IP55 Rated VA Display

0~120C Dial Boiler Capillary Thermometer with Probe OEM Customizable Industrial Use IP55 Rated VA Display

$6-6.504.8(325)
MOQ: 10 pieces
400+ store reviews16% reorder rate≤3h response time
Shenzhen Omena Technology Co., Ltd.Shenzhen Omena Technology Co., Ltd.🇨🇳CN9 yrs
Industrial Capillary Oil Gas Liquid Temperature Gauge Pressure Exhaust Gas Thermometer

Industrial Capillary Oil Gas Liquid Temperature Gauge Pressure Exhaust Gas Thermometer

$514.7(87)
MOQ: 1 piece
Taizhou Kayson Electric Heating Technology Co., Ltd.Taizhou Kayson Electric Heating Technology Co., Ltd.verified🇨🇳CN7 yrs
Industrial Capillary Oil Gas Liquid Temperature Gauge Pressure Exhaust Gas Thermometer

Industrial Capillary Oil Gas Liquid Temperature Gauge Pressure Exhaust Gas Thermometer

$504.7(526)
MOQ: 1 piece
≤2h response time
BEST ELECTRIC EQUIPMENT CO., LTDBEST ELECTRIC EQUIPMENT CO., LTD🇻🇳VN6 yrs
Industrial Capillary Oil Gas Liquid Temperature Gauge Pressure Exhaust Gas Thermometer

Industrial Capillary Oil Gas Liquid Temperature Gauge Pressure Exhaust Gas Thermometer

$504.8(657)
MOQ: 1 piece
1500+ store reviews22% reorder rate≤2h response time
Taizhou Best Electric Equipment Co., Ltd.Taizhou Best Electric Equipment Co., Ltd.verified🇨🇳CN12 yrs
Household Floor Mounted Boiler Capillary Thermometer

Household Floor Mounted Boiler Capillary Thermometer

$3.20-4.504.1(508)
MOQ: 10 pieces
≤4h response time
Wenzhou Bingo Imp. & Exp. Co., Ltd.Wenzhou Bingo Imp. & Exp. Co., Ltd.🇨🇳CN2 yrs
High Temperature 0-500C U Clamp Oven Boiler Capillary Thermometer

High Temperature 0-500C U Clamp Oven Boiler Capillary Thermometer

$104.4(543)
MOQ: 50 pieces
200+ store reviews8% reorder rate≤2h response time
Beijing ShengRuiKe Automation Equipment Co., Ltd.Beijing ShengRuiKe Automation Equipment Co., Ltd.verified🇨🇳CN16 yrs
Industrial Stainless Steel 304 Capillary Thermometer Capillary Oil Gas Liquid Temperature Gauge Pressure Exhaust Gas Thermometer

Industrial Stainless Steel 304 Capillary Thermometer Capillary Oil Gas Liquid Temperature Gauge Pressure Exhaust Gas Thermometer

$40-454.7(843)
MOQ: 1 piece
100+ store reviews10% reorder rate≤2h response time
Taizhou Yuling Electrical Appliance Co., Ltd.Taizhou Yuling Electrical Appliance Co., Ltd.verified🇨🇳CN14 yrs
100mm 0-100C Industrial Stainless Steel Steam Vapor Capillary Type Flanged Mechanical Temperature Gauge Gas Pressure Thermometer

100mm 0-100C Industrial Stainless Steel Steam Vapor Capillary Type Flanged Mechanical Temperature Gauge Gas Pressure Thermometer

$25-284.7(809)
MOQ: 5 pieces
50+ store reviews6% reorder rate≤4h response time
Jiangsu Beco Instruments CO., LTD.Jiangsu Beco Instruments CO., LTD.🇨🇳CN8 yrs
Textile Industry Capillary Oil Filled Pressure Type Thermometer Long Probe

Textile Industry Capillary Oil Filled Pressure Type Thermometer Long Probe

$704.9(436)
MOQ: 2 pieces
50+ store reviews16% reorder rate≤2h response time
Shanghai Cixi Instrument Co., Ltd.Shanghai Cixi Instrument Co., Ltd.verified🇨🇳CN19 yrs
Gas Expansion Capillary Thermometer

Gas Expansion Capillary Thermometer

$10-304.2(455)
MOQ: 10 pieces
CHUEN CHARNG CO., LTD.CHUEN CHARNG CO., LTD.🇹🇼TW15 yrs
Capillary Thermometer with Gas Filled Pressure Gauges for Accurate Readings

Capillary Thermometer with Gas Filled Pressure Gauges for Accurate Readings

$135.0(96)
MOQ: 50 pieces
10% reorder rate≤5h response time
Ningbo Autumn Tree Instruments Co., Ltd.Ningbo Autumn Tree Instruments Co., Ltd.verified🇨🇳CN10 yrs
SS304 Probe Oil Filled Gas Expansion Pressure Type Capillary Thermometer

SS304 Probe Oil Filled Gas Expansion Pressure Type Capillary Thermometer

$475.0(163)
MOQ: 5 pieces
50+ store reviews≤8h response time
Shanghai Feilong Meters & Electronics Co., Ltd.Shanghai Feilong Meters & Electronics Co., Ltd.🇨🇳CN18 yrs
60mm Gas Filled Stainless Steel Industrial Oven Back Connection Capillary Thermometer with U-clmp

60mm Gas Filled Stainless Steel Industrial Oven Back Connection Capillary Thermometer with U-clmp

$7.505.0(613)
MOQ: 500 pieces
50% reorder rate≤9h response time
Ningbo RISING INSTRUMENT CO., LTD.Ningbo RISING INSTRUMENT CO., LTD.🇨🇳CN14 yrs
SS304 Probe Oil Filled Gas Expansion Pressure Type Capillary Thermometer

SS304 Probe Oil Filled Gas Expansion Pressure Type Capillary Thermometer

$475.0(480)
MOQ: 5 pieces
20% reorder rate≤5h response time
Shanghai Festop Measurement And Control Technology Co., Ltd.Shanghai Festop Measurement And Control Technology Co., Ltd.🇨🇳CN1 yr

Deep Dive · Full Report

Full Market Report

1 document · Live-fetched from source

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Sources & References

22 sources cited · Verified industry data & reports

Rainbow Electronics Co.,Ltd. - Company Infomation

tradeKorea.com

Rainbow Electronics Co., Ltd was founded in 1983 and just launched to produce capillary Thermostats for boiler use first. For nearly 25 years, Rainbow has led ...

Adjustable Capillary thermostat, Fan controller ... - RAINBOW

rainbowelec.co.kr

RAINBOW has been designing and manufacturing innovative products for industrial measuring instruments and commercial kitchen appliances for over fourty ...

RAINBOW ELECTRONICS CO., LTD. - capillary thermostats ...

EC21

Main Products · FIXED AND RESET THERMOSTATS · Industrial Thermostats · High Ampere Thermostat · Capillary Thermometers · Remote Adjustable Thermostats · Capillary ...

Company Overview | Manufacturing temperature controls

rainbowelec.co.kr

RAINBOW has been designing and manufacturing innovative products for industrial measuring instruments and commercial kitchen appliances for over fourty years ...

RAINBOW ELECTRONICS : ALL

Amazon.com

Runpower Capillary Thermostat TS-120SR, 32-248F, 20A / 250V, Black, Knob Control, HVAC Thermostats. Image of RAINBOW ELECTRONICS Capillary Thermostat ...

Rainbow Electronics and Fasteners

Rainbow Electronics and Fasteners

Rainbow Electronics is a leader in supplying electronic components and fasteners, as well as other types of products. We're proud to say that we have over ...