Plumbing products.
There are a vast range of plumbing materials on the market.
When attending a call out you never know what to expect. Pipe work alone has various different manufacturers and differing uses. Todays plumber has to know what products and what situations to use the products in. The installation also has to comply with the New Zealand Building Code.
I often see DIY jobs that have been carried out without consideration, causing long term detrimental problems. Better to call a professional and get it right first time. Meeting your plumbing needs.