精密

accuracy / exact / precise / refined

essence / extract / vitality / energy / semen / sperm / mythical goblin spirit / highly perfected / elite / the pick of sth / proficient (refined ability) / extremely (fine) / selected rice (archaic)

secret / confidential / close / thick / dense

China Precision Machinery Import-Export Corporation (CPMIEC)

precision instruments

refinement / to add precision

fine ceramics (used for dental implants, synthetic bones, electronics, knife blades etc) / advanced ceramics / engineered ceramics