Tradesmen Program The Board for Contractors regulates individual tradesmen who engage in the trades of electrical; plumbing; heating, ventilation, and air conditioning (HVAC); gas fitting; water well construction; elevator mechanics; backflow prevention; and building energy analysis.
Zyban Â® (bupropion SR) is a prescription medicine used to help people stop smoking.
The result: more lives saved. Polybenzobisoxazole (p-phenylene-2,6-benzobisoxazole) (PBO) is a rigid-rod isotropic crystal polymer. Zylon is a new high performance fiber developed by TOYOBO using the latest material science and state of the art fiber technology. Zylon has superior tensile strength and modulus compared to p-Aramid fibers.