As one of the world's largest manufacturers of technical cleaning and surface finishing equipment, Guyson International is experiencing unprecedented export success in China and Mainland South East Asia with its 'Kerry' branded Microsolve Mono and Co-Solvent 'vapour cleaning' systems. Typically, these systems are used to clean medium to high volume PCB assemblies, such as insulated-gate bipolar transistor (IGBT) power module packaging for electric vehicles (EV), produced by local indigenous manufacturers as well as by subsidiaries of Western-owned companies.

This export growth is not a coincidence. A significant part of this has to do with Guyson's Shanghai-based China team, who even during a troubled 2020 and 2021, have continued to attend and exhibit at a series of nationwide electronics seminars with the support from Guyson's Malaysian staff. These regional sales efforts have also been supported by an updated Chinese language website - - that highlights the wide range of cleaning and finishing products available from Guyson.

Microsolve Co-Solvent systems achieve cleanliness standards to specifications including BS, IPC [Institute for Printed Circuits], ESA [European Space Agency] and MIL SPEC. The Co-Solvent process defluxes all types of PCBs, assembled and reworked, removes no-clean solder flux residues (photo below - Before (left) After (Right)) and eliminates the white deposits associated with traditional single solvent and water-based detergent processes.

Before - no-clean solder flux residue removal from insulated-gate bipolar transistor (IGBT) power module packaging for electric vehicles (EV)
After - no-clean solder flux residue removal for insulated-gate bipolar transistor (IGBT) power module packaging for electric vehicles (EV)

There are increasing concerns over the environment and personal health with the current worldwide climate change issue, leading to an increased demand for the Co-Solvent cleaning process. The Co-Solvent process replaces all VOC solvents (Volatile Organic Compounds) which impact global warming and are also classified as CMRs (Carcinogens, Mutagens & Reproductive Toxins).

Furthermore, Microsolve owners enjoy low, predictable running costs, thanks to intelligent machine design - a highly efficient reflux cooling system, a vapour break, and a deep freeboard zone all cut OEL (Occupational Exposure Limits) for operators while minimising costly solvent loss. With an optional automatic HFE (hydrofluoroether) top-up system, you can log the rate of solvent usage. In a 7-day test of a high capacity co-solvent unit, the device showed a total consumption of only 2.4 litres. A typical HFE solvent use per week for PCB cleaning customers is less than 2%, and the solvating solution is typically changed every four to six months.

Automation of the cleaning process also reduces operating costs by ensuring consistently high quality, reducing reject rates and increasing throughput. Both Mono and Co-Solvent Microsolve systems achieve this by controlling the speed at which the basket enters and exits the vapour zone, thus reducing solvent drag-out and losses to the atmosphere that can occur when the vapour blanket is disturbed.

Autotrans iDrive

In this regard, Guyson offers a variety of automated handling systems, including the Autotrans Single Axis Lift, which provides vertical movement for loads up to 10 kg, as well as the recently introduced Autotrans iDrive, which offers lifting capacities between 30-80 kg, depending on the model.

In addition to being supplied with guarding to comply with CE regulations for moving parts, Autotrans handling transporters can be integrated with feed conveyors or loading and unloading tables for fully automatic operation. Options to suit machine location, factory layout and operating procedures can also be selected.

Guyson can arrange free 'try before you buy' ultrasonic cleaning trials for your PCB components, prove the process and make recommendations on the most suitable cleaning systems for you - call +44 (0)1756 799911 or email today.

About Guyson
Privately owned, Guyson International Limited is a worldwide leader in the design and manufacture of blast finishing, spray washing and ultrasonic cleaning equipment. The company, which was founded more than eight decades ago, holds ISO certifications 9001:2015 and ISO 45001:2018 and its head office is located at Skipton, North Yorkshire, in the north of England. Guyson has four international subsidiary companies: Guyson Corporation of the USA, located in Saratoga Springs, New York State; Guyson SA, situated near Paris, France; Guyson Sdn Bhd in Penang, Malaysia; and Guyson CN, in Wuxi, Jiangsu Province, China.

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