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After laser welding , the weldments are analyzed using X-ray diffractometer , optical microscope , scanning electron microscope equipped with energy dispersive spectroscopy and micro-hardness tester .
 manufacturing process: laser welding; process characterization: X-ray; process characterization: optical; machine or equipment: microscope; machine or equipment: scanning electron microscope; process characterization: energy dispersive spectroscopy
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: manufacturing standard, machanical property, manufacturing process, material, engineering feature, process parameter, machine or equipment, application, process characterization, enabling technology, biomedical, concept or principle 
Text: {0} 
Answer:
 manufacturing process: laser welding; process characterization: X-ray; process characterization: optical; machine or equipment: microscope; machine or equipment: scanning electron microscope; process characterization: energy dispersive spectroscopy