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Resistors(HKTDC Electronic Components & Parts, Vol 03,2004)


Hong Kong Electronic Components & Parts

Vol 3, 2004

Product Features

Resistors
Vital Parts

Sensors
Detecting Success

Sound Modules
Audio Appeal

Resistors

Vital Parts

Vingin Industrial Ltd specialises in producing photo resistors designed for light detection and control

Rising demand for a wide variety of resistors from makers of consumer electronic devices and household appliances has been a big boon for Hong Kong manufacturers of these critical components. They have won recognition worldwide for products that guarantee virtually flawless performance at highly competitive prices.

One such company is Vingin Industrial Ltd, which has made its mark as a specialist maker of photo resistors that detect and control light in products as diverse as cameras and electronic toys. It also makes a photocoupler, which functions as an LED and a photo resistor.

Vingin, established in 1992, keeps its prices competitive by sourcing materials - including cadmium sulphide, tin-plated wires and epoxy substances - mainly from the Chinese mainland, according to director Law Wai Chuen.

He adds that clients can request prices based on the specific requirements of an order. Vingin seeks a minimum order of 10,000 pieces, for delivery one week after full payment to its main markets on the mainland, Europe and Asia.

Law notes that a highly skilled workforce of 300 uses advanced optical equipment and stringent quality control norms at its 10,000-square-metre factory in Zhuhai on the mainland.

Another firm, Weltronics Component Ltd, has been making a number of resistors under its KOA brand to meet the diverse needs of its expanding client base, explains director Wood Li.

The 20-year-old firm makes the RK73K series and RK73H series chip-type resistors and RD series carbon film resistors for use in audio devices, telecommunication products and home appliances.

Weltronics also makes the KVSF6 series trimmer potentiometer for use in more demanding types of audiovisual equipment, motor control circuits and power supplies.

Li declines to quote prices, noting that they vary according to quantity and product specifications.

Key components and raw materials for the resistors are mainly imported from Japan and a few select overseas sources to ensure consistent quality.

About 60% of its products are supplied to factories on the mainland, with the remaining 40% going to manufacturers of electronic and electrical products based in Hong Kong.

"Customer satisfaction is one of the major factors behind our success. We place strong emphasis on maintaining a close relationship with clients and providing a complete range of products and services with flexible payment options," Li says.

Staff training, too, plays an equally important part in Weltronics' business strategy. "Skills are kept up-to-date with regular refresher courses ensuring our staff have acquired the latest skills to meet customers' ever-changing needs," says Li.

Meanwhile, Union Electric Works Co Ltd mainly supplies resistors to mainland-based OEM manufacturers of electronic products and electrical appliances for leading brand names like Sony, Aiwa and Casio. It also exports some of its products to the US, Europe and Southeast Asia.

Union sources the ceramic substrates, tin-plated copper wire and epoxy paint from Taiwan and Japan for the manufacture of its fixed film resistors, which are marketed under the UNION OHM brand.

"Recently, prices of raw materials and production costs have been rising sharply. Although there is tremendous pressure to adjust our prices accordingly, we are unable to pass these costs on completely to our customers due to the tough competition we now face," explains general manager Lo Mun Kun.

Lo says the company has lowered its profit margin in order to remain competitive. However, Union expects a boost in orders this year on the back of a steady rise in demand.

"Our chip resistors, available from 1/16W to 1W, are used in complex electronic products, like notebook computers, mobile phones and MP3 devices, through surface mounting," Lo explains. "Customers looking for resistors with higher power rating can choose from an array of our metal oxide resistors and wire-wound resistors."

Union's monthly production of chip resistors, carbon film resistors, metal film resistors, metal oxide resistors, wire-wound resistors and fusible resistors totals 150 million.

After confirmation of a minimum order of 10,000 pieces per item, delivery takes about 3-4 weeks.

Leading supplier Welleader Co Ltd is a distributor of Royal-Ohm brand name resistors from Taiwan to clients in Hong Kong and the mainland.

"Our Royal-Ohm resistors meet JIS standards and are manufactured at our supplier's factories in Taiwan, Thailand and on the mainland that operate under stringent Japanese management norms," says director Ricky Lam.

In 2003, the three factories made a total of about 75 billion Royal-Ohm brand name resistors. "This year we expect output to increase to about 90 billion pieces, thanks to an expansion in the production facilities," says Lam.

Minimum order requirements and pricing vary depending on the client's request, he explains, adding that delivery takes 1-2 days for items in stock or about 30-45 days otherwise.

Thanks to the adoption of the latest technology and an ability to quickly meet client needs, Hong Kong manufacturers now play a vital part in the growth and development of the global electronics industry.

WRITTEN BY MARGARET CHAN

Contact Details

Golden Sing Industrial Co
Unit 15, 15/F, Blk A
Veristrong Ind Centre
34-36 Au Pui Wan St
Fo Tan, New Territories
Hong Kong
Tel: 852-2145-4482
Fax: 852-2692-7583
Email: yan@goldensing.com
Web: www.goldensing.com

Kin Fung Electrical Co Ltd
Flat E, 3/F
Wai Cheung Ind Centre
5 Shek Pai Tau Rd
Tuen Mun, New Territories
Hong Kong
Tel: 852-2465-6887
Fax: 852-2456-3403
Email: kinfung@kinfung-elect.corp.com.hk
Web: www.yp.com.hk/kinfung

Union Electric Works Co Ltd
14/F
A Gee Wing Chang Ind Bldg
6 Fung Yip St
Chai Wan
Hong Kong
Tel: 852-2558-2168
Fax: 852-2897-0241
Email: unionres@globalsources.com

Vingin Industrial Ltd
Units A6 & A8, 10/F, Blk A
Hong Kong Ind Centre
489-491 Castle Peak Rd
Kowloon
Hong Kong
Tel: 852-2673-3850
Fax: 852-8100-8789
Email: sales@vingin.com
Web: www.vingin.com

Welleader Co Ltd
Flats 14-15, 12/F
Wah Shing Centre
11-13 Shing Yip St
Kwun Tong, Kowloon
Hong Kong
Tel: 852-2342-6189
Fax: 852-2343-0201
Email: welleader@attglobal.net

Weltronics Component Ltd
Rm 1101-02, Tower 1
Cheung Sha Wan Plaza
833 Cheung Sha Wan Rd
Cheung Sha Wan, Kowloon
Hong Kong
Tel: 852-2410-0623
Fax: 852-2410-0920
Email: terence.lai@weltronics.com
Web: www.weltronics.com