McNab COMMERCE CENTER ASSOCIATES
                       2005 Cypress Creek Road, Suite 210
                            Ft. Lauderdale, FL 33309


December 15, 1998



Stuart Streger, Vice President/CFO
Technical Chemicals and Products, Inc.
3341 S.W. 15 Street
Pompano Beach, FL 33069

RE: 3341-3361 S.W. 15 Street, Pompano Beach, FL 33069

Dear Mr. Streger:

This letter is to confirm our understanding as follows:

     1.  We agree that the term of the Original Lease dated October 14, 1992 and
         amended on April 10, 1996 and June 10, 1996 for the above referenced
         premises is hereby extended until October 31, 2003.

     2.  You are hereby extending your current lease through October 31, 2003
         with one three-year option to further extend the lease at the same
         terms and conditions as in the current lease.

     3.  You will notify us by October 31, 2002 if you intend to vacate by
         October 31, 2003. In the event that no notification is given, then, in
         that event, it will be considered that the option to extend is
         exercised.

We further agree that you will lease an additional 5,140 square foot space
adjoining the referenced space beginning January 1, 1999. Address 3285 S.W. 15
Street, Pompano Beach, FL. Rent due for the additional space will be pro-rated
from the date of availability by TCPI.

The initial monthly base rent for the combined spaces, which you are now
leasing, will be: Rent $17,933.46 plus your share of the additional rent and
plus applicable taxes.

Your share of the additional rent shall be computed on 82% of the total expenses
for the entire building.

In the event that we are unable to deliver possession of the space for any
reason whatsoever, the rental reserved to be paid herein for the space shall be
abated pending the making of the space available. The validity or terms of the
lease shall not be affected by such an event.

You agree to accept the space in as-is condition, subject to a walk thru after
the current tenant leaves the space within three business days. Only substantial
changes from the walk thru, which occured on 12/16/98, will be addressed.

                                                      cont'd.

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TCPI
Stuart Streger
Lease Terms
Page 2 of 2


All other terms and conditions of the lease apply to this space as well as all
terms and conditions of the lease remaining in full force and effect for the
referenced space.

Please indicate your acceptance in the space provided below.

Very truly yours,

Mc NAB COMMERCE CENTER
ASSOCIATES


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WITNESSED:


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AGREED AND ACCEPTED:

TECHNICAL CHEMICALS AND PRODUCTS, INC.


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     Date: 
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WITNESSED:


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