About Us


To provide and support semiconductor manufacturing equipment and personnel with superior spare parts, refurbishment services and custom solutions

About As

Located in Hsin Chu City Taiwan, Online Semi Solution, Inc. (OSS) is a supplier of replacement components (spares) and refurbishment services for wafer processing equipment.  OSS serves many process areas including Etch, and Thin Films. We provide new, used and repaired components, and also offer refurbishing services . OSS currently manufactures parts and provides services for numerous OEM wafer processing equipment.

All parts introduced to OSS as a new product to develop or refurbishment, go through a documentation process, from reverse engineering, to customer sampling, to the final stage of qualifying the product as a viable replacement component or refurbishment that meets or exceeds the OEM’s performance requirements. All parts currently on our list have been qualified at one of the many wafer fabs located world wide. OSS sells its own products directly and through qualified distributors. All products sold by OSS are manufactured per our specifications for OSS exclusively.