请大哥大姐们帮帮忙翻译下信用证的条款

Question

1) SIGNED COMMERCIAL INVOICE IN TRIPLICATE, ORIGINAL OF WHICH MUST BE CERTIFIED BY THE CHAMBER OF COMMERCE/C.C.P.I.T
INVOICE MUST INDICATE THAT GOODS ARE MARKED OR STAMPED OR PRINTED OR LABELED IN AN IRREMOVABLE WAY (ACCORDING TO GOODS NATURE) WITH THE NAME OF COUNTRY OF ORIGIN.
2) CERTIFICATE OF ORIGIN IN TRIPLICATE STATING THAT GOODS ARE OF CHINESE ORIGIN (ORIGINAL OF WHICH MUST BE CERTIFIED BY THE CHAMBER OF COMMERCE/C.C.P.I.T SHOWING NAME AND ADDRESS OF SUPPLIER (S)/MANUFACTURER (S))
EVIDENCING THAT GOODS ARE OF PURE ORIGIN OF THE ABOVE STATED ORIGIN.
OTHERWISE, ANOTHER DECLARATION FROM SUPPLIER(S)/MANUFACTURER (S) SHOULD BE APPENDED TO THE CERTIFICATE OF ORIGIN DECLARING THAT CERTAIN PAPT(S) OR COMPONENT(S) OF THE GOODS DESCRIBED IN THEATTACHED CERTIFICATE OF ORIGIN ARE PRODUCTS OF SUCH COUNTRY COUNTRIES OTHER THAN THE COUNTRY NAMED THEREIN AND SPECIFYING
(A) COUNTRY OF ORIGIN
(B) PERCENTAGE OF VALUE OF PART(S) OR COMPONENT(S) RELATIVE TO TOTAL SHIPMENT.
THE DECLARATIION (IF ANY) MUST BE NOTARIZED BY NOTARY PUBLIC OR CERTIFIED BY THE CHAMBER OF COMMERCE/ C.C.P.I.T

Answer 1

要求发票与产地证。都要做商会认证或贸促会认证。具体
1三份签署的商业发票，正本要做商会认证或贸促会认证。发票上要显示原产国名已在货物上以不可涂抹的方式标注或印刷或戳记（具体方式据货物特性处理）

2证明货物为中国原产的原产地证一式三份，正本须做商会认证或贸促会认证。并显示供应商或生产商的名称与地址。货物须是上述原产国完全产品，如果不是，须附上生产商或供应商的另一声明特别表明产地证中所述货物的相关零部件的原产国及所占装运货物价值的百分比。
这份声明（如果有的话）须由公证机构公证或由商会或贸促会认证。