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Dr Jeff Zhang Shenzhen China, mainland: Share on Facebook

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Dr Jeff Zhang's Friends

What do you like to do with your down time / onshore time?: Diving helmet collection, Match box collection, Tour, Writing.
As a diving physician and visiting professor teaching diving medicine, safety and regulations to several universities and diving training centers in China.
As a diving advisor to authorities, associations, hospital, insurance, procurement, publisher and manufacturer in China.

At 5:54am on December 1, 2018, Veronica Frankline said…: I have something very vital to disclose with you but I found it difficult to express myself here, since it's a public site.Could you please get back to me via my direct email (frankline8veronica@gmail.com) for more details.
Have a nice day,
Veronica

At 10:03pm on May 8, 2010, abdul azeez said…: mmm,yes...i am sunil friend,how you know him?how your job going on?where are you now?

At 12:11pm on April 15, 2010, jorge escobar calderon said…: hola
como esta
spero qu bien
acepto ser su amigo

saludos desde chila

At 7:48pm on April 12, 2010, Doug Smith said…: Hi Jeff:

The Com Hat 1 was the predacessor of the superlites. It used a liquid filled liner to cushion the head and offset the air space / buoyancy problems. Unfortunately the liner tended to leak. The Superlite addressed the problem by using a plain foam liner and adding weights to the helmet to offset the buoyancy. If you take a look at my profile pictures there is a brochure there that describes the Com Hat 1.

Doug

At 6:26pm on April 12, 2010, Ed Shippen said…: Thanks for the compliment on my helmet. Used it for 10 years in the oilfield on air and helium dives. Rarely used demand as it was super quiet(Desco exhaust made more noise than incoming air). Tried KM adjustable regulator, but preferred standard regulator. Chin pad in helmet kept mouthpiece easy to draw air directly from regulator. Just gathering dust now as I don't think anyone is hiring 70 year old divers.

At 8:54pm on April 10, 2010, Ed Fogderud said…: Jeff,

It's good to hear from you again. Hope all is well with you,.
Ed...