which belongs to amorphous material. Silica gel is a kind of amorphous silicon dioxide, mainly composed of silica. Its chemical property is stable, and it does not burn. Chemical formula is xSiO2?yH2O. Silica gel contains organic silica gel and inorganic silica gel. Inorganic silica gel is a highly active adsorption material. It is usually prepared by reaction of sodium silicate and sulfuric acid, and a series of post-processing processes such as aging and acid bubble. Household use desiccant, humidity regulator, deodorizer belongs to inorganic silica gel.Organic silica gel is an organosilicon compound. It refers to a compound containing Si-C bond and at least one organic group, which is directly linked to silicon atoms. It is mainly divided into four categories: silicone rubber, silicone resin, silicone oil and silane coupling agent. There are 4 types of silicone products, moulded silicone products, extruded silica gel products, liquid silica gel products and special silicone products. Silicone rubber is one of organic silica gel and it is one of the moulded silicone products Temperature resistance, weatherability, electrical insulation performance, Physiological inertia, Low surface tension and low surface energy are the outstanding characteristics of organic silica gel. The one id bracelets engravedwe use to make bracelet is named polysiloxanes di-Me Me vinyl vinyl group-terminated chemically. We add curing agent to the soft original silicone rubber and mix them evenly, then put it to molding machine with high temperature of about 200℃, a few seconds later the silicone rubber gets solidified. Here comes the silicone bracelet with custom logo by mould. Characteristic of the silicone rubber stay same on the process but it get more strengthened. custom-wrist-sweatbandssiliconeband-ca If running is your hobby , you should have a digital rubber wristband. A sport digital rubber wristband is a digital chip putting in the rubber band part. The biggest advantage of the digital rubber wirstband for sports is the high step counting accuracy , more stability of 50 meters waterproof , the long life time built-in battery and also comfortable and durable as it is the silicone made material. A sport digital rubber wristid bracelets engravedband is the assistant of good health to remind you of sporting. cancer-wristbands-sayingsbreast-cancer-awareness-wristbands alth and makes people full of infinite hope for healthy life and vitality of life; green ribbon implies love; light and fluttering green ribbon symbolizes happiness and joy, which is the endless source for us to realize the value of life and create a better life. Green is peace! It"s the color of olive branches in the Athens flame. We can make green silicone wristbands for married couples in wedding ceremony. Couples would like to give a wristband as souvenir. Guest present their best wish to the happy couple wearing the bracelet printed with couple name and wedding date. What a romantic item. For the anniversary of wedding, we can make silicone wristband to each other, memorizing the sweetness and hardness we have had this years. It is cheap but meaningful. We have a cute style for it. The glowing wristband. It glow several colors, it is the best for night party and dinner.