About Us

1980 Established in June 1980.
Business item started from conventional Saddle Series PSGS-2550AH and PSGS-3060AH with 7” wheelhead.
Over-Arm PSGO Series started to develop and produce.
1982 Factory moved to Taichung until now.
The first factory building was finished.
1983 Started to produce Saddle Series PSGS-2550AH and PSGS-3060AH with 14” wheelhead Column PSGC Series with short base started to develop and produce
1984 Double Column Planer PSGP Series have been developed and produced
1987 Column PSGC Series with long base have been developed and produced
Auto down feed AD3 have been developed and produced
1988 The second and third factory buildings were finished
Awarded Taiwan Excellent Product Medal “It is very well made in Taiwan” for PSGS, PSGC, PSGO and PSGP Series
ISO 9002 certified by BCIQ Taiwan
CE certified by AIB-VINCOTTE INTER Holland
Awarded Taiwan Excellent Product Medal “It is very well made in Taiwan” for surface grinders
1998 Start to develop Rotary Planer PSRP Seires surface grinders.
CE and EMC certified by TUV Rheinland Germany
Start to develop Rotary PSRS Series surface grinders
2001 Lead ERP to factory computer system. China factory in JiaXing is established
Production procedure and factory’s layout is converted ISO 9001:2000 is certified by AFAQ-EAQA(5400) UK
Start to develop Saddle PSGS-CNC Series surface grinders.
CE and EMC certified by TUV Rheinland Germany
2008 Column type Rotary Table Grinder have been developed and produced
2009 V800 Vertical Grinder have been developed and produced
2011 Double Column Planer PSGP (surface grinding of table is 2000*4000 mm) have been developed and produced.
The factory building in WuChi Town were finished ISO 9001:2008 is certified by JAS-ANZ
2013 Successfully developed a new saddle series: PSGS-3060N
2018 Won ISO 9001: 2015 JW-1059 certification
Successfully developed large stroke PSGC column series: PSGC-80250AHR
Successfully applied for a patent for hydraulic slider device
2019 Successfully developed the belt drive column series: PSGC-50100E


PROTH Industrial Co., Ltd., a highly reputed manufacturer of precision surface grinders in Taiwan, provides a whole line of surface grinders including the following series:

Saddle Type Surface grinding Machine
Column Type Surface grinding Machine
Over-arm Type Surface grinding Machine
Double Column Planer Surface grinding Machine
Rotary Surface grinding Machine
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Double Column Rotary Planer Surface grinding Machine
Since 1980, we have been dedicated to researching and developing the most comprehensive ranges of surface grinders. Our mission is to exceed the needs of our customers by creating new and innovative designs through continuous development and pioneering new technologies.

Over the years, PROTH grinding machines have been acclaimed both domestically and internationally. We provide the best machines with the best service. With a proud commitment to quality control, PROTH surface grinders consistently surpass all the rigorous quality requirements of the European and Japanese markets.

In addition to the emphasis on developing our product lines and achieving a better working environment, PROTH Industrial Co., Ltd. is dedicated to social and environmental concerns.

PROTH seeks to provide not only the best surface grinding machines but to do so with the focus on humanity.