1. Cleaning and maintenance of gold jewelry: cleaning in gold jewelry store, using ultrasonic washing tank, washing standard formula is: 40C warm water 1000 ml, anhydrous chromic anhydride 100 g, sulfuric acid 30 ml. The method is: hang the jewelry on the plastic sheet number, then wear it with copper wire, hang it on the stainless steel stick, and suspend it in the washing tank for 80-120 seconds. The manual cleaning method is to first immerse the jewelry in a 30% sulfuric acid cleaning solution for 5 minutes, wash it with a brush, then rinse it under the tap water for 5 minutes, and finally use 20% shampoo or detergent. Minutes, wash, rinse with water for 20 minutes, and dry with silk.
2, silver jewelry cleaning and maintenance: use 50C warm water 1000 ml, phosphoric acid 200 ml, concentrated washing powder 30 grams, the liquid is poured into the ultrasonic cleaning tank for 100 seconds, then rinse with water.
Household cleaning: Pour the cleaning solution into a container, soak the silver jewelry for 10 minutes, then wash it with a toothbrush, then rinse with water for 10 minutes.
Kids Tops,Kids Wear,Girls Viscose Dress,Girls Solid Blouse
SHAOXING NEWTEX IMP.&EXP. CO., LTD , https://www.newtexgarment.com