Burning resin is an ancient practice, used in spiritual and religious ceremonies, for its aromatic and purifying qualities. To burn resin, you will need a heat-resistant vessel, charcoal discs, and of course, the resin itself. Begin by placing the charcoal in your vessel. Light the charcoal with a lighter or matches until it starts to sparkle and is covered in gray ash, which indicates it’s hot enough. Then, carefully place a few pieces of resin on top of the hot charcoal. The resin will begin to melt and emit its aromatic smoke. Keep the vessel in a safe place while burning and never leave it unattended. It's important to ensure the area is well-ventilated. Experiment with different resins like frankincense or myrrh to discover the variety of scents available. To summarize, burning resin involves igniting a charcoal disc in a heat-resistant vessel and placing resin pieces onto the hot charcoal, ensuring the room is well-ventilated and never leaving the process unattended for safety and enjoyment of the aromatic benefits.

Traditionally, Saran wrap was made from polyvinyl chloride (PVC). PVC provided the cling and flexibility that made the product popular for food storage. However, due to health concerns associated with the plasticizers in PVC, which could potentially migrate into food, and environmental concerns about the disposal of PVC, the composition of Saran wrap was changed. Since the early 2000s, Saran wrap is predominantly made from low-density polyethylene (LDPE). This change was made to address those health and environmental concerns. LDPE is considered safer for food contact and is less harmful to the environment when disposed of, although it doesn't cling as well as PVC. This shift reflects a broader movement in the plastics industry toward safer and more sustainable materials for products that come into contact with food.

The high cost of PVC pipes can be attributed to several factors. Firstly, the production of PVC (polyvinyl chloride) requires petroleum or natural gas, making its price susceptible to fluctuations in the global oil market. Additionally, the manufacturing process involves various chemicals and stabilizers to enhance its properties, which further contributes to the cost. Environmental regulations and recycling challenges also add to the expenses, as PVC production and disposal must meet strict standards to minimize ecological impact. Furthermore, the demand for PVC pipes in construction, plumbing, and electrical industries, driven by its durability, light weight, and resistance to corrosion, underpins its high price. Manufacturers pass these production and regulatory compliance costs to consumers, resulting in higher retail prices for PVC pipes.