1970's | MILESTONE ESTABLISHED SIA HONG PANICH : | |
| | STARTED SMALL METAL TRADING BUSINESS. | |
| | STARTED RESEARCH AND SUCCEEDED IN INVENTING COPPER MAGNET WIRE SIZING MACHINE. | |
| | STARTED RESEARCH AND SUCCEEDED IN INVENTING WIRE INSULATING MACHINES. | |
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| 1980's | ESTABLISHED BANGKOK COPPER LIMITED PARTNERSHIP : | |
| | STARTED COPPER MAGNET WIRE PRODUCTION TO SERVE THE BEGINNING ERA OF TRANSFORMER. | |
| | INDUSTRY IN THAILAND NAME : "YAMAKAWA" , COMFORMED WITH JIS 3140, | |
| | SUCCESSFUL FEEDBACK FROM CUSTOMERS AND GOVERNMENT ELECTRICTY AUTHORIZATION, MEA & PEA. | |
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| 1990's | ESTABLISHED UNITED COPPER COMPANY LIMITED : | |
| | ORIGINALLY FOR COPPER SHEET PRODUCTION AND EXPANDED RANGE OF COPPER MAGNET WIRE PRODUCTS. | |
| | STRUGLING THROUGH 1997 FINANCIAL CRISIS AND FINALLY SURVIVED . | |
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| 2000's | START DISRUPTING ALL PROCESSES & SUCCEED 1st CONTINUOUS EXTRUSION TECHNOLOGY IN THAILAND . | |
| | LAUNCHED NEW PATENT PRODUCTS ; POWER RAIL SYSTEM "WAKAI" . | |
| | LAUNCHED EXTRA SERVICE ; GIANT ROLLER GRINDING MAX 1,000 MM. IN DIAMETERS AND 5,000 MM. LONG. | |
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| 2010's | EXPANDING TO 5 COPPER EXTRUSION PRODUCTION LINES TO WIDE RANGE OF FINISHED PRODUCTIONS. | |
| | DEVELOPING BAR PRODUCT FABRICATION PROCESSES. | |
| | STARTED FABRICATION SERVICE FOR COPPER APPLICATIONS IN POWER INDUSTRY. | |
| | ACCREDITED WITH ISO 9001: 2008 STANDARD AND UPDATED TO 2015 VERSION FROM UL DQS . | |
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| NOW | CONTINUE MAKING RESEARCH AND DEVELOPMENT TO IMPROVE FOR ALL VARIETIES OF COPPER PRODUCTS. | |