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Achieving Current Objectives(HKTDC Electronic Components & Parts, Vol 03,2007)



Sunrise Industrial Ltd markets a wide variety of coils to Japan, the Chinese mainland, Germany and the Philippines
Hong Kong manufacturers of coils, chokes and transformers are aware that they can win friends and large orders by supplying the very best quality at highly competitive prices

Electronic and electrical products, old and new, are only as dependable as the components they incorporate. With this in mind, Hong Kong manufacturers devote all the necessary effort and precision to ensure an array of coils and related items to satisfy international buyers.

"Customers can be confident that our coils give them an advantage when producing their own high-quality products," says Mainstar Industries Ltd sales coordinator Sharon Chan. "Our coils are custom-made, high quality and delivered within reasonable lead times."

Established in 1991, Mainstar specialises in custom manufacturing magnetic components, including switching power transformers, modem transformers, line filters, pulse transformers and coupling transformers, toroidal chokes and inductors.

"Our components are used in a wide range of electrical products," says Chan, adding that Mainstar's R&D team works closely with customers from around the world.

Managers at Mainstar's 300-worker factory in Zhenlong on the Chinese mainland stress flexibility, fast sampling, high quality, small sizes, reasonable prices and on-time deliveries.

"We cross-reference to standard designs or help customers select the best designs to fit their applications, while products satisfy international standards like UL, CSA, VDE and CE," Chan says.

"We have more than a 100% QC inspection," she claims. "Many of the five million pieces we sell per month go to leading customers from Hong Kong, the US and the UK."

Mainstar mainly sources raw materials such as copper wire, bobbins, ferrite cores and ferrite lamination from Japan, Korea, Taiwan and the US. "Sometimes we depend on the availability of raw materials, and so our lead times may vary. Usually, we need about 45 days. If a product is extra-complex, it may take slightly longer," Chan says.

"As an experienced and reliable supplier, we invite customers to submit product specifications and we send samples and price quotations accordingly."

About three decades ago, Gauss Electronics Co Ltd began to build transformers and coils, mainly for photographic flash units. "Now our products are used in many consumer products, like signalling units, electronic power supplies, switching adaptors and inverters," says executive secretary Silon Tang.

"They can serve as voltage driving coils, line filters, common mode chokes, power chokes and inductors, and we have both PCB-mounted and surface-mounted types."

The firm's output has greatly expanded, too. "Altogether, we make about 2.5 million coils per month at our two factories in Guangdong Province," she adds, noting that there are 600 workers in the 3,500-square-metre (total) facilities.

"We put a lot of emphasis on our high-voltage trigger coils and bobbin-less air coils," Tang says. "Most of the high-voltage trigger coils are used for ignition purposes, and we offer competitive prices and a quality that meets UL standards."

The bobbin-less air coils are engineered and tailor-finished on winding machines to make self-bonding air coils wound with fine magnet wires. "This allows us to minimise production costs while attaining stable quality," says Tang, noting that the firm's 30-plus winding machines produce more than 30,000 coils per day.

"We have markets everywhere," she says, mentioning the US, the UK, Germany, Italy, the Netherlands, Japan, Singapore, Malaysia and the Chinese mainland.

Business continues to expand. "As the markets focus on particular electronic items, manufacturers need coils," Tang says. "Even when attention shifts to different models and products, they still use coils. So, by constantly adjusting to trends, we always find a market."

Gauss has ISO 9000 certification, while its transformers comply with UL and IEC standards. Minimum order is 1,000 pieces per model, and delivery is four weeks after confirmation.

Another firm, PCT Industries Ltd, established in 1984, also takes pride in the advanced equipment imported from the US, Japan and Taiwan at its 4,500-square-metre, 500-worker factory in Dongguan on the Chinese mainland. This company is also ISO 9001- and ISO 14001-certified.

"We use the most advanced equipment because winding requirements become more specialised all the time," says manager Carol Lam. "For testing and quality control, for example, we've also invested in a spectrum analyzer."

PCT sources its ferrite cores, copper wire and bobbins from Japan, Taiwan and the Chinese mainland, while its finished coils go into battery chargers, shavers, electric toothbrushes, massage chairs and more.

"As an OEM manufacturer, we work with leading customers from Europe and Japan," says Lam, adding that the company has an office in Berlin. "Our technical department plays an important role. Instead of offering standard items, we can develop exactly what each customer needs." Delivery is 4-6 weeks after confirmation, while minimum orders are negotiable.

Meanwhile, 16-year-old Yoto Electronics Ltd produces SMD coils, choke coils and EMC coils, plus beads, inductors, transformers, adaptors, power filters and more. These products, often carrying the Yoto brand name, find customers in the US, Europe and elsewhere.

"Our coils contribute to electrical and household appliances, including television, radios, computers and digital cameras. Independent design and development capabilities allow us to match customers' needs while aiming for top quality at competitive prices," says general manager Ken Kong.

Much of the production and testing equipment comes from Taiwan, Japan and the US, while Yoto's ISO 9001-certified, 5,000-square-metre factory in Dongguan employs 500 workers. "Minimum orders range from 1,000-10,000 pieces, and delivery time follows order confirmation by two weeks," Kong adds.

Hong Kong is clearly right up to scratch in terms of reliable, competitively-priced coils and transformers for today's demanding requirements.

Contact details:

Gauss Electronics Co Ltd
Units 5-8, 4/F, Blk A
Vigor Ind Bldg
14 Cheung Tat Rd
Tsing Yi, New Territories
Hong Kong
Tel: 852-2497-0066
Fax: 852-2431-0190
Web: www.gauss.com.hk

Mainstar Industries Ltd
13/F, Blk A
Hop Ming Fty Bldg
6-10 On Yip St
Chai Wan
Hong Kong
Tel: 852-2558-9319
Fax: 852-2557-6936
Web: www.mainstar.hk

PCT Industries Ltd
Rm 605
Sunbeam Centre
27 Shing Yip St
Kwun Tong, Kowloon
Hong Kong
Tel: 852-2342-4188
Fax: 852-2341-8999
Web: www.pcthk.com

SNM Int'l Ltd
Flat 4, 3/F
Wah Yiu Ind Centre
30 Au Pui Wan St
Fo Tan, New Territories
Hong Kong
Tel: 852-2690-3176
Fax: 852-2687-6396
Web: www.snm.com.hk

Sunrise Industrial Ltd
Rms 7-9, 10/F, Blk B
Kailey Ind Centre
12 Fung Yip St
Chai Wan
Hong Kong
Tel: 852-2897-5969
Fax: 852-2897-1916
Web: www.sunriseindltd.com

Yoto Electronics Ltd
Unit 1, 19/F, Blk A
New Trade Plaza
6 On Ping St
Sha Tin, New Territories
Hong Kong
Tel: 852-2690-3696
Fax: 852-2690-3979
Web: www.yotocoils.com.hkEnds