In HDD, Semiconductor industries and micro electronic devices fields, organic and inorganic contaminants may induce corrosion, scratch, and adhesion and break short issues, which affect the product performance and reliability. MSL have the capabilities and rich experiences to perform cleanliness testing of electronic components. In order to ensure that we meet the stringent cleanliness specification required by the electronic industries, we have established a systematic quality control system to achieve high accuracy and high precision. The services include: cleanliness test and evaluation for incoming and products; providing complete analysis techniques and solution for micro contamination control.