A Keychain is a small part usually made of various materials such as metal, acrylic, rubber, PVC or plastic, used to attach keys and other small items such as wallets, mobile phones, gloves, etc. It usually has a loop or hook that can be attached to the key so that it can be carried or removed. Customised Keychain designs and materials vary by brand, model, and personal preference, but they are generally functional and aesthetically pleasing.
The use of the Keychain Custom is very convenient, it can be conveniently hung on the key, so that the key is not easy to lose. Different styles of Custom Key Chains and keys have different effects, and can be used in various ways in daily life, such as connecting backpacks, handbags or clothing when going out, or connecting items when camping, traveling, etc. .
Custom Keychain designs and shapes vary by brand, model, and personal preference. SomeKeychains For Women will be printed with brand logos or cartoon images to increase their aesthetics and personalization. Some high-end Custom Key Chains also feature high-quality materials and fine craftsmanship to reflect their quality and value.
Keychains,Customised Keychain,Keychain Custom,Keychain Customized,Custom Keychain Shenzhen Yiyixing Zipper Manufacture Co.,Ltd , https://www.nicekeychain.com
Golden Tempered Glass Lid, Glass Lid
Test for quality control:Â
Â
1. FLATNESS CHECK
Place the glass lid on a completely smooth table , and put a piece of 1mm thickness iron plate beside the ring the glass lid, then moving the iron gauge along with the circumference of the lid, the glass lid passes the test if the iron plate does not push in
Â
2. THTERMAL SHOCK
Put the glass lid into oven temperature to 200°C, and constant temperature for 30 minutes, remove it immediately into 20°C water , glass no broken or crack
Â
3. IMPACT TEST
Place a lid, domed size up, on a hard surface,
Dropping a 225 grams steel ball from a height of 1.5meter,
No fracture no shatter, to pass
Note : Don't drop the ball near or onto a vent hole /rivet hole Â
Â
4. SCRATCH TEST (PRESSURE TEST)
Use 120-grit (abrasive paper ) sandpaper to scratch two side and three directions 15 times, then put into room temperature water for 15 minutes, it pass if no breakage and no crack.
Â
5. POLOLARISCOPE CHECK
To test the balance of compressive stress and tensile stress depends on the color what you see.
Â
6. FRAGMENTATION CHECK
Apply tape (adhesive film)on the convex (front) surface of the lid, domed side upward, break it with a hammer broken 5X5cm measuring range , number of particles (fragments) counted should be at least 40,
The purpose of this test is to determine whether the glass has been adequately toughened.