ceramic bobbin element

When people refer to a whirlpool hot tub spa – are they all talking about the same thing? Or are they something different? Here is a brief look at the history of the modern day hot tub and the names we use to describe them. Hot Tubs. The term hot tub originally referred to the wooden, barrel shaped tubs, which became popular in the late 1960’s and early 1970's. Based on ancient roman and asian hot water bathing ideas, early hot tubs were made from redwood or cedar. These types of hot tub were often very deep, and similar in style to a wine barrel, with steel hoops holding the boards in place. They used wood-fired heaters to varying degrees of success, and as they lacked a filtration system they were not very sanitary - but that didn't seem to dampen people's enthusiasm for them!   When the industry began building hot tubs of molded fiberglass shells in the late 70's they also added filters, jets, pumps and heaters which heralded the birth of the modern day “Spa”,  &quo

This is a funny and interesting inflatable castle bouncer, it comes with bounce house and water slide with pool, allow up to 8 kids to party at one time! It brings fun to kids with a basketball hoop included while also having a water slide and pool. This inflatable castle and slide is made of strong PVC material and double laminated nylon secured by double stitching bonds. This Inflatable Castle With Slide is suitable for water parks, schools, large communities, commercial real estate, resorts, leisure and entertainment centers, stadiums, exhibition centers, urban carnivals, commercial activities, joint production of TV programs, villa areas, etc. It is made of high quality PVC fabric through scientific three-dimensional combination and running through a blower. It is a children's entertainment center which integrates entertainment, playfulness, and educational functions. In addition, the Inflatable Castle With Slide uses high-strength polymer composite PVC mesh fabric, which has