Sign up for
Participate with your entry in one of our professional or student awards.Sign up for an award
You are using an outdated browser. Please upgrade your browser to improve your experience.
Around the stones means surround furnace heating, when all the relatives and friends sitting together in the cold day, heater can warm our hearts. Going out, please carry warmly stones which from the heater ,we can able to carry the warming.
China metrology institute