As Mr. Kim informed you as below, VVP hardware shall be used to the normal steel door and Your hardware will be used to the fire-rated door as certified by authorrities. Please go ahead your work with Mr. Kim;s instruction and guide line.
Upon the cost variation caused by the specification change, I made a form for you to fill in and submit.
I believe that It'll help us to make clear on the cost, and reduce your worries and burdens on the cost, which may impact to our schedule.
Every Door Type may have some changes compared with the contract specification. I think that I had enough explained about this before/after the bidding process.
Please break down your contract as per the form provided and let it compared with the revised one.
I hope you to visit me sooner or later, so that I can explain on how to fill in. Thank you.
Please contact me anytime.