(a) No attorney, sheriff's deputy, or other person concerned in the execution of process, shall become surety in any case, except as granted in writing by special leave of the court. (b) In all cases wherein the court is required to approve individual sureties, the application shall be accompanied by the affidavit of the surety, setting out the extent of his real and personal estates respectively, and the probable value of the same over and above all liens and indebtedness. (c) Any surety company desiring to qualify as a surety shall file with the clerk of the orphans' court division a certificate of the insurance commissioner, as required by law, accompanied by a financial statement as of December 31 of the last preceding year. Any corporation whose home office is outside of the County of Chester shall also file a stipulation agreeing that service of process, in any proceeding arising out of its acting as surety or fiduciary pursuant to approval under this or preceding rule, may be made upon it by serving. Such process upon the clerk of the orphans' court division of Chester County, and that such service shall be the equivalent of actual service upon such corporation. To continue to offer itself as surety it shall file annually with the clerk of the orphans' court division on or before the first Monday of June of each year a similar certificate and statement, and failure to do so within such time shall bar it from acting until such certificate and statement shall have been filed. A surety company which shall have complied with the requirements of this rule shall be approved by the clerk of the orphans' court division, unless otherwise provided by law, subject to the right of exceptions and hearing thereon by the court.