Avoid at all costs.

Dishonest from start to end. They will low ball their tender to get the job, alter the daily rates, "omit" items that suddenly come in at 100,000's over the fixed tender amount, change your design to maxi mise their profits (e.g. build with brick), yell and perform at weekly site meetings, and hit you with almost weekly lawyer letter's to intimidate you. Steer clear.