Chin Hsing Precision Industry Co., Ltd. has been established Since 1990. More than 15 years professional experienced manufacture of Withdrawal Sleeve, Withdrawal sleeves, lock nuts, lock washers," with American National Standard nuts and washers and SNP SNW series. Self-created brand "C. S" with ISO 90002 certification. We provide full range of product, stable quality, sufficient stock, large capacity, and prompt delivery. Our products are distributing overseas and domestic market and exporting around the world with reasonable prices. Any comment form you esteemed company will be appreciated. We are strict to our quality of product standard in order to make customer have good right. Besides, we also provide excellent service to our customer.