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Old 03-30-2013, 06:56 AM   #3
is One Chatty Farker
Join Date: 03-29-11
Location: Beijing,China

For high temperature grilling, you simply set the umbrella aside.
Still the fuel efficiency is higher.

Chairman of China Science Academy once studied in Germany
He redesigned a pressure reduce valve in hydraulics.
the new design is more simple and less pressure lose.
The valve had been living there for 100+ years!
the original valve was already a very simple design.
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