Business Visa - B1

i am doing job in a private limited company as a Manager Procurement since 2005 in Pakistan.
and i have been importing machinery from a US based company since 2008.
my company is a sole distributor of that US based company.
we have some technical issues in some products. my company and my principle arrange 2 days technical training in there factory in US. 3 persons are invited from our Pakistani company.
(Me Manager Procurement), Director Commercial and Manager Maintenance.
we are also add another plane with our visit to attend a coating show at another city.
so our visit was for 7- 8 days.

and we appear for 1st time on 3rd FEB 2016. refused on interview 214(b) Islamabad US Embassy.

VO ask some basic questions we answered almost correctly...
but i think we selected B1/B2 on visa form and on interview we only define business meeting and training may be this is the reason of 1st refusal.

then i made second attempted and select B1 only for the same case i applier on 19 FEB 2016.
Almost the interview was the same..and got 214(b) again..

Still dont know whats the reason we all three are permanent jobs good salaries (100K-200K), married and left our 2-3 children back. our propose was temporary business training sponsored by our principle company to resolve some issues.
 
every thing is OK but dont know whats the exact refusal reason.
in Islamabad Embassy there was 320 appointments daily and the visa approval from 320 persons only 1-2. this is very high refusal rate. but the 95% applicant was the B2.

but we have a solid reason and relations with american company but this s very strange that on of visa officer not ask any question about strong ties and gave us 214(b).
only 3-4 persons applied for business visa b1 from islamabad

only simple questions asked as below...

propose of visit
married
salary (100K)
day of stay.
adress.
us contact.

NOW I AM READY FOR THIRD INTERVIEW....
BUT HAVE SOME GUIDANCE FROM ANY ONE EXPERIENCE THE SAME CASE OR HAVE GUIDANCE FOR MY ISSUE......BUNDLE OF THANKS......